Search a number
-
+
10131913 = 117112973
BaseRepresentation
bin100110101001…
…100111001001
3201001202101001
4212221213021
510043210123
61001055001
7152056051
oct46514711
921052331
1010131913
1157a0290
123487461
13213991c
1414ba561
15d520ad
hex9a99c9

10131913 has 8 divisors (see below), whose sum is σ = 11209536. Its totient is φ = 9080400.

The previous prime is 10131871. The next prime is 10131923. The reversal of 10131913 is 31913101.

It is a happy number.

10131913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10131913 is a prime.

It is a super-2 number, since 2×101319132 = 205311322079138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10131923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5706 + ... + 7267.

It is an arithmetic number, because the mean of its divisors is an integer number (1401192).

Almost surely, 210131913 is an apocalyptic number.

It is an amenable number.

10131913 is a deficient number, since it is larger than the sum of its proper divisors (1077623).

10131913 is a wasteful number, since it uses less digits than its factorization.

10131913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13055.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 10131913 is about 3183.0666031360. The cubic root of 10131913 is about 216.3866602524.

It can be divided in two parts, 1013 and 1913, that added together give a triangular number (2926 = T76).

The spelling of 10131913 in words is "ten million, one hundred thirty-one thousand, nine hundred thirteen".

Divisors: 1 11 71 781 12973 142703 921083 10131913