31130031310120 has 64 divisors (see below), whose sum is σ = 74171200942800. Its totient is φ = 11718201262080.

The previous prime is 31130031310097. The next prime is 31130031310141. The reversal of 31130031310120 is 2101313003113.

It can be written as a sum of positive squares in 8 ways, for example, as 7462370646756 + 23667660663364 = 2731734^2 + 4864942^2 .

It is a super-2 number, since 2×31130031310120² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3344796 + ... + 8570164.

Almost surely, 2^{31130031310120} is an apocalyptic number.

It is an amenable number.

31130031310120 is an abundant number, since it is smaller than the sum of its proper divisors (43041169632680).

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

31130031310120 is a wasteful number, since it uses less digits than its factorization.

31130031310120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234158 (or 5234154 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31130031310120 its reverse (2101313003113), we get a palindrome (33231344313233).

The spelling of 31130031310120 in words is "thirty-one trillion, one hundred thirty billion, thirty-one million, three hundred ten thousand, one hundred twenty".