31320113120 has 24 divisors (see below), whose sum is σ = 73993767624. Its totient is φ = 12528045184.

The previous prime is 31320113113. The next prime is 31320113179. The reversal of 31320113120 is 2131102313.

It is a super-2 number, since 2×31320113120² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97875194 + ... + 97875513.

It is an arithmetic number, because the mean of its divisors is an integer number (3083073651).

Almost surely, 2^31320113120 is an apocalyptic number.

It is an amenable number.

31320113120 is an abundant number, since it is smaller than the sum of its proper divisors (42673654504).

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

31320113120 is a wasteful number, since it uses less digits than its factorization.

31320113120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195750722 (or 195750714 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31320113120 its reverse (2131102313), we get a palindrome (33451215433).

The spelling of 31320113120 in words is "thirty-one billion, three hundred twenty million, one hundred thirteen thousand, one hundred twenty".