113312111031 has 40 divisors (see below), whose sum is σ = 195780756864. Its totient is φ = 63969633360.

The previous prime is 113312110999. The next prime is 113312111047. The reversal of 113312111031 is 130111213311.

It is not a de Polignac number, because 113312111031 - 2⁵ = 113312110999 is a prime.

It is a super-2 number, since 2×113312111031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113312110995 and 113312111013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113312111531) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1156825 + ... + 1250946.

Almost surely, 2^113312111031 is an apocalyptic number.

113312111031 is a deficient number, since it is larger than the sum of its proper divisors (82468645833).

113312111031 is an equidigital number, since it uses as much as digits as its factorization.

113312111031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407873 (or 2407864 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 113312111031 its reverse (130111213311), we get a palindrome (243423324342).

The spelling of 113312111031 in words is "one hundred thirteen billion, three hundred twelve million, one hundred eleven thousand, thirty-one".