30881 (number)
30,881 (thirty thousand eight hundred eightyone) is an odd fivedigits prime number following 30880 and preceding 30882. In scientific notation, it is written as 3.0881 × 10^{4}. The sum of its digits is 20. It has a total of 1 prime factor and 2 positive divisors. There are 30,880 positive integers (up to 30881) that are relatively prime to 30881.
Basic properties
 Is Prime? Yes
 Number parity Odd
 Number length 5
 Sum of Digits 20
 Digital Root 2
Name
Short name  30 thousand 881 

Full name  thirty thousand eight hundred eightyone 
Notation
Scientific notation  3.0881 × 10^{4} 

Engineering notation  30.881 × 10^{3} 
Prime Factorization of 30881
Prime Factorization 30881
Prime numberω(n)  Distinct Factors  1  Total number of distinct prime factors 

Ω(n)  Total Factors  1  Total number of prime factors 
rad(n)  Radical  30881  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  10.337896387034  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 30,881 is 30881. Since it has a total of 1 prime factor, 30,881 is a prime number.
Divisors of 30881
2 divisors
τ(n)  Total Divisors  2  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  30882  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  1  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  15441  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  175.72990639046  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  1.9999352373551  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 30,881 can be divided by 2 positive divisors (out of which 0 are even, and 2 are odd). The sum of these divisors (counting 30,881) is 30,882, the average is 15,441.
Other Arithmetic Functions (n = 30881)
φ(n)  Euler Totient  30880  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  30880  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 3334  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  8  The number of ways n can be represented as the sum of 2 squares 
There are 30,880 positive integers (less than 30,881) that are coprime with 30,881. And there are approximately 3,334 prime numbers less than or equal to 30,881.
Divisibility of 30881
m  2  3  4  5  6  7  8  9 

n mod m  1  2  1  1  5  4  1  2 
30,881 is not divisible by any number less than or equal to 9.
Classification of 30881
By Arithmetic functions
 Arithmetic
 Prime
 Deficient
Expressible via specific sums
 Polite
By Powers
 Prime Power
 Square Free
Base conversion (30881)
Base  System  Value 

2  Binary  111100010100001 
3  Ternary  1120100202 
4  Quaternary  13202201 
5  Quinary  1442011 
6  Senary  354545 
8  Octal  74241 
10  Decimal  30881 
12  Duodecimal  15a55 
16  Hexadecimal  78a1 
20  Vigesimal  3h41 
36  Base36  ntt 
Basic calculations (n = 30881)
Multiplication
n×yn×2  61762 

n×3  92643 
n×4  123524 
n×5  154405 
Division
n÷yn÷2  15440.500 

n÷3  10293.666 
n÷4  7720.250 
n÷5  6176.200 
Exponentiation
n^{y}n^{2}  953636161 

n^{3}  29449238287841 
n^{4}  909421927566817921 
n^{5}  28083858545190904218401 
Nth Root
^{y}√n^{2}√n  175.72990639046 

^{3}√n  31.37355881911 
^{4}√n  13.256315717063 
^{5}√n  7.9056625200837 
30881 as geometric shapes
Circle
Radius = nDiameter  61762 

Circumference  194031.04547101 
Area  2995936357.5952 
Sphere
Radius = nVolume  1.2335668087853E+14 

Surface area  11983745430.381 
Circumference  194031.04547101 
Square
Length = nPerimeter  123524 

Area  953636161 
Diagonal  43672.329019644 
Cube
Length = nSurface area  5721816966 

Volume  29449238287841 
Space diagonal  53487.460988534 
Equilateral Triangle
Length = nPerimeter  92643 

Area  412936570.69673 
Altitude  26743.730494267 
Triangular Pyramid
Length = nSurface area  1651746282.7869 

Volume  3470626015685.1 
Height  25214.230915629 
Cryptographic Hash Functions
md5  f74c62f119a92803fb8773ad50e528c9 

sha1  a8845d0b55f938d709883d5a783e2281710e809c 
sha256  017c6717160f470833f0faa980614df14b387e879a3fb71b52e2b03bc22763fc 
sha512  8420e03c86127885fa6b1f6e183ef5cf899d5a15642b849257393e289fe5718d800aafc30e92c7e2c0087da48c41b2b1ea1330d6cec62eb41c8c61f2bdb05718 
ripemd160  b4c5b8e53b42604a01f09c7f92f564e52ecd8ffb 