31485511632 has 20 divisors (see below), whose sum is σ = 81337571840. Its totient is φ = 10495170528.

The previous prime is 31485511567. The next prime is 31485511663. The reversal of 31485511632 is 23611558413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327974032 + ... + 327974127.

It is an arithmetic number, because the mean of its divisors is an integer number (4066878592).

Almost surely, 2^31485511632 is an apocalyptic number.

It is an amenable number.

31485511632 is an abundant number, since it is smaller than the sum of its proper divisors (49852060208).

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

31485511632 is a wasteful number, since it uses less digits than its factorization.

31485511632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655948170 (or 655948164 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The spelling of 31485511632 in words is "thirty-one billion, four hundred eighty-five million, five hundred eleven thousand, six hundred thirty-two".