31862166072 has 32 divisors (see below), whose sum is σ = 86896817280. Its totient is φ = 9655201760.

The previous prime is 31862166043. The next prime is 31862166073. The reversal of 31862166072 is 27066126813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31862166073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60344748 + ... + 60345275.

It is an arithmetic number, because the mean of its divisors is an integer number (2715525540).

Almost surely, 2^31862166072 is an apocalyptic number.

It is an amenable number.

31862166072 is an abundant number, since it is smaller than the sum of its proper divisors (55034651208).

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

31862166072 is a wasteful number, since it uses less digits than its factorization.

31862166072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120690043 (or 120690039 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 31862166072 in words is "thirty-one billion, eight hundred sixty-two million, one hundred sixty-six thousand, seventy-two".