313124431321 has 16 divisors (see below), whose sum is σ = 346309689600. Its totient is φ = 281307714048.

The previous prime is 313124431241. The next prime is 313124431387. The reversal of 313124431321 is 123134421313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313124431321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313124431321.

It is not an unprimeable number, because it can be changed into a prime (313124431021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322136 + ... + 1540873.

It is an arithmetic number, because the mean of its divisors is an integer number (21644355600).

Almost surely, 2^313124431321 is an apocalyptic number.

It is an amenable number.

313124431321 is a deficient number, since it is larger than the sum of its proper divisors (33185258279).

313124431321 is a wasteful number, since it uses less digits than its factorization.

313124431321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863248.

The product of its digits is 5184, while the sum is 28.

Adding to 313124431321 its reverse (123134421313), we get a palindrome (436258852634).

The spelling of 313124431321 in words is "three hundred thirteen billion, one hundred twenty-four million, four hundred thirty-one thousand, three hundred twenty-one".