31604135900 has 18 divisors (see below), whose sum is σ = 68580975120. Its totient is φ = 12641654320.

The previous prime is 31604135897. The next prime is 31604135921. The reversal of 31604135900 is 953140613.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158020580 + ... + 158020779.

Almost surely, 2^31604135900 is an apocalyptic number.

It is an amenable number.

31604135900 is an abundant number, since it is smaller than the sum of its proper divisors (36976839220).

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

31604135900 is a wasteful number, since it uses less digits than its factorization.

31604135900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316041373 (or 316041366 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 31604135900 in words is "thirty-one billion, six hundred four million, one hundred thirty-five thousand, nine hundred".