113031131213 has 64 divisors (see below), whose sum is σ = 156853960704. Its totient is φ = 78579936000.

The previous prime is 113031131179. The next prime is 113031131221. The reversal of 113031131213 is 312131130311.

It is a cyclic number.

It is not a de Polignac number, because 113031131213 - 2⁸ = 113031130957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113031131113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31991195 + ... + 31994727.

It is an arithmetic number, because the mean of its divisors is an integer number (2450843136).

Almost surely, 2^113031131213 is an apocalyptic number.

113031131213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

113031131213 is a deficient number, since it is larger than the sum of its proper divisors (43822829491).

113031131213 is a wasteful number, since it uses less digits than its factorization.

113031131213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 113031131213 its reverse (312131130311), we get a palindrome (425162261524).

The spelling of 113031131213 in words is "one hundred thirteen billion, thirty-one million, one hundred thirty-one thousand, two hundred thirteen".