31222312304 has 20 divisors (see below), whose sum is σ = 60581821176. Its totient is φ = 15588293952.

The previous prime is 31222312237. The next prime is 31222312313. The reversal of 31222312304 is 40321322213.

It is a self number, because there is not a number n which added to its sum of digits gives 31222312304.

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, 1417619 + ... + 1439474.

Almost surely, 2^31222312304 is an apocalyptic number.

It is an amenable number.

31222312304 is a deficient number, since it is larger than the sum of its proper divisors (29359508872).

31222312304 is a wasteful number, since it uses less digits than its factorization.

31222312304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857784 (or 2857778 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31222312304 its reverse (40321322213), we get a palindrome (71543634517).

Subtracting 31222312304 from its reverse (40321322213), we obtain a palindrome (9099009909).

The spelling of 31222312304 in words is "thirty-one billion, two hundred twenty-two million, three hundred twelve thousand, three hundred four".