31604533532 has 36 divisors (see below), whose sum is σ = 65469417048. Its totient is φ = 13260640800.

The previous prime is 31604533489. The next prime is 31604533547. The reversal of 31604533532 is 23533540613.

It is a junction number, because it is equal to n+sod(n) for n = 31604533492 and 31604533501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2505194 + ... + 2517777.

It is an arithmetic number, because the mean of its divisors is an integer number (1818594918).

Almost surely, 2^31604533532 is an apocalyptic number.

It is an amenable number.

31604533532 is an abundant number, since it is smaller than the sum of its proper divisors (33864883516).

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

31604533532 is a wasteful number, since it uses less digits than its factorization.

31604533532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5023010 (or 5022997 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 35.

The spelling of 31604533532 in words is "thirty-one billion, six hundred four million, five hundred thirty-three thousand, five hundred thirty-two".