3131034012520 has 64 divisors (see below), whose sum is σ = 7120803044880. Its totient is φ = 1238918823936.

The previous prime is 3131034012497. The next prime is 3131034012551. The reversal of 3131034012520 is 252104301313.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 186535882404 + 2944498130116 = 431898^2 + 1715954^2 .

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, 8102752 + ... + 8480368.

Almost surely, 2^{3131034012520} is an apocalyptic number.

It is an amenable number.

3131034012520 is an abundant number, since it is smaller than the sum of its proper divisors (3989769032360).

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

3131034012520 is a wasteful number, since it uses less digits than its factorization.

3131034012520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379862 (or 379858 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 3131034012520 its reverse (252104301313), we get a palindrome (3383138313833).

The spelling of 3131034012520 in words is "three trillion, one hundred thirty-one billion, thirty-four million, twelve thousand, five hundred twenty".