31866506132 has 12 divisors (see below), whose sum is σ = 56192084256. Its totient is φ = 15811624920.

The previous prime is 31866506129. The next prime is 31866506173. The reversal of 31866506132 is 23160566813.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31866506132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30406448 + ... + 30407495.

It is an arithmetic number, because the mean of its divisors is an integer number (4682673688).

Almost surely, 2^31866506132 is an apocalyptic number.

It is an amenable number.

31866506132 is a deficient number, since it is larger than the sum of its proper divisors (24325578124).

31866506132 is a wasteful number, since it uses less digits than its factorization.

31866506132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60814078 (or 60814076 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 31866506132 in words is "thirty-one billion, eight hundred sixty-six million, five hundred six thousand, one hundred thirty-two".