31313302031312 has 20 divisors (see below), whose sum is σ = 69336597355296. Its totient is φ = 13419986584800.

The previous prime is 31313302031303. The next prime is 31313302031329. The reversal of 31313302031312 is 21313020331313.

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, 139791526814 + ... + 139791527037.

Almost surely, 2^{31313302031312} is an apocalyptic number.

It is an amenable number.

31313302031312 is an abundant number, since it is smaller than the sum of its proper divisors (38023295323984).

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

31313302031312 is a wasteful number, since it uses less digits than its factorization.

31313302031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279583053866 (or 279583053860 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31313302031312 its reverse (21313020331313), we get a palindrome (52626322362625).

The spelling of 31313302031312 in words is "thirty-one trillion, three hundred thirteen billion, three hundred two million, thirty-one thousand, three hundred twelve".