23131510113 has 32 divisors (see below), whose sum is σ = 33129676800. Its totient is φ = 14318479296.

The previous prime is 23131510109. The next prime is 23131510147. The reversal of 23131510113 is 31101513132.

It is not a de Polignac number, because 23131510113 - 2² = 23131510109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23131510113.

It is not an unprimeable number, because it can be changed into a prime (23131510183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1110448 + ... + 1131086.

It is an arithmetic number, because the mean of its divisors is an integer number (1035302400).

Almost surely, 2^23131510113 is an apocalyptic number.

23131510113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23131510113 is a deficient number, since it is larger than the sum of its proper divisors (9998166687).

23131510113 is a wasteful number, since it uses less digits than its factorization.

23131510113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21141.

The product of its (nonzero) digits is 270, while the sum is 21.

The spelling of 23131510113 in words is "twenty-three billion, one hundred thirty-one million, five hundred ten thousand, one hundred thirteen".