31311321312304 has 40 divisors (see below), whose sum is σ = 66978105751872. Its totient is φ = 14060943846720.

The previous prime is 31311321312281. The next prime is 31311321312367. The reversal of 31311321312304 is 40321312311313.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071703674 + ... + 1071732889.

Almost surely, 2^{31311321312304} is an apocalyptic number.

It is an amenable number.

31311321312304 is an abundant number, since it is smaller than the sum of its proper divisors (35666784439568).

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

31311321312304 is a wasteful number, since it uses less digits than its factorization.

31311321312304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143436665 (or 2143436659 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 31311321312304 its reverse (40321312311313), we get a palindrome (71632633623617).

Subtracting 31311321312304 from its reverse (40321312311313), we obtain a palindrome (9009990999009).

The spelling of 31311321312304 in words is "thirty-one trillion, three hundred eleven billion, three hundred twenty-one million, three hundred twelve thousand, three hundred four".