31311311324 has 12 divisors (see below), whose sum is σ = 54804204000. Its totient is φ = 15652967328.

The previous prime is 31311311299. The next prime is 31311311357. The reversal of 31311311324 is 42311311313.

It is a self number, because there is not a number n which added to its sum of digits gives 31311311324.

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, 645764 + ... + 692555.

It is an arithmetic number, because the mean of its divisors is an integer number (4567017000).

Almost surely, 2^31311311324 is an apocalyptic number.

It is an amenable number.

31311311324 is a deficient number, since it is larger than the sum of its proper divisors (23492892676).

31311311324 is a wasteful number, since it uses less digits than its factorization.

31311311324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344172 (or 1344170 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 31311311324 its reverse (42311311313), we get a palindrome (73622622637).

The spelling of 31311311324 in words is "thirty-one billion, three hundred eleven million, three hundred eleven thousand, three hundred twenty-four".