313131031313104 has 20 divisors (see below), whose sum is σ = 606691687745700. Its totient is φ = 156565434475520.

The previous prime is 313131031313059. The next prime is 313131031313119. The reversal of 313131031313104 is 401313130131313.

It can be written as a sum of positive squares in 2 ways, for example, as 268175079106704 + 44955952206400 = 16376052^2 + 6704920^2 .

It is a super-2 number, since 2×313131031313104² (a number of 30 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, 37649322 + ... + 45207670.

It is an arithmetic number, because the mean of its divisors is an integer number (30334584387285).

Almost surely, 2^{313131031313104} is an apocalyptic number.

It is an amenable number.

313131031313104 is a deficient number, since it is larger than the sum of its proper divisors (293560656432596).

313131031313104 is a wasteful number, since it uses less digits than its factorization.

313131031313104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147638 (or 10147632 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 313131031313104 its reverse (401313130131313), we get a palindrome (714444161444417).

The spelling of 313131031313104 in words is "three hundred thirteen trillion, one hundred thirty-one billion, thirty-one million, three hundred thirteen thousand, one hundred four".