113131002312 has 48 divisors (see below), whose sum is σ = 306722255580. Its totient is φ = 37670236800.

The previous prime is 113131002311. The next prime is 113131002323. The reversal of 113131002312 is 213200131311.

113131002312 is a `hidden beast` number, since 11 + 31 + 310 + 0 + 2 + 312 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 109102053636 + 4028948676 = 330306^2 + 63474^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (113131002311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 767139 + ... + 902642.

Almost surely, 2^113131002312 is an apocalyptic number.

113131002312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113131002312 is an abundant number, since it is smaller than the sum of its proper divisors (193591253268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113131002312 is a wasteful number, since it uses less digits than its factorization.

113131002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670734 (or 1670727 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 113131002312 its reverse (213200131311), we get a palindrome (326331133623).

The spelling of 113131002312 in words is "one hundred thirteen billion, one hundred thirty-one million, two thousand, three hundred twelve".