31023312313120 has 24 divisors (see below), whose sum is σ = 73292575340124. Its totient is φ = 12409324925184.

The previous prime is 31023312313111. The next prime is 31023312313121. The reversal of 31023312313120 is 2131321332013.

It can be written as a sum of positive squares in 2 ways, for example, as 29163067280656 + 1860245032464 = 5400284^2 + 1363908^2 .

It is not an unprimeable number, because it can be changed into a prime (31023312313121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96947850819 + ... + 96947851138.

Almost surely, 2^{31023312313120} is an apocalyptic number.

It is an amenable number.

31023312313120 is an abundant number, since it is smaller than the sum of its proper divisors (42269263027004).

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

31023312313120 is a wasteful number, since it uses less digits than its factorization.

31023312313120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193895701972 (or 193895701964 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31023312313120 its reverse (2131321332013), we get a palindrome (33154633645133).

The spelling of 31023312313120 in words is "thirty-one trillion, twenty-three billion, three hundred twelve million, three hundred thirteen thousand, one hundred twenty".