31356312204 has 24 divisors (see below), whose sum is σ = 83616832768. Its totient is φ = 8958946320.

The previous prime is 31356312181. The next prime is 31356312293. The reversal of 31356312204 is 40221365313.

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, 186644632 + ... + 186644799.

Almost surely, 2^31356312204 is an apocalyptic number.

It is an amenable number.

31356312204 is an abundant number, since it is smaller than the sum of its proper divisors (52260520564).

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

31356312204 is a wasteful number, since it uses less digits than its factorization.

31356312204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373289445 (or 373289443 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 31356312204 its reverse (40221365313), we get a palindrome (71577677517).

The spelling of 31356312204 in words is "thirty-one billion, three hundred fifty-six million, three hundred twelve thousand, two hundred four".