31320213104 has 40 divisors (see below), whose sum is σ = 61287403248. Its totient is φ = 15504289280.

The previous prime is 31320213097. The next prime is 31320213157. The reversal of 31320213104 is 40131202313.

It is a congruent number.

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, 3414284 + ... + 3423444.

Almost surely, 2^31320213104 is an apocalyptic number.

It is an amenable number.

31320213104 is a deficient number, since it is larger than the sum of its proper divisors (29967190144).

31320213104 is a wasteful number, since it uses less digits than its factorization.

31320213104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11273 (or 11267 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31320213104 its reverse (40131202313), we get a palindrome (71451415417).

The spelling of 31320213104 in words is "thirty-one billion, three hundred twenty million, two hundred thirteen thousand, one hundred four".