31723504877872 has 10 divisors (see below), whose sum is σ = 61464290700908. Its totient is φ = 15861752438928.

The previous prime is 31723504877809. The next prime is 31723504877881. The reversal of 31723504877872 is 27877840532713.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991359527418 + ... + 991359527449.

Almost surely, 2^{31723504877872} is an apocalyptic number.

It is an amenable number.

31723504877872 is a deficient number, since it is larger than the sum of its proper divisors (29740785823036).

31723504877872 is a wasteful number, since it uses less digits than its factorization.

31723504877872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982719054875 (or 1982719054869 counting only the distinct ones).

The product of its (nonzero) digits is 110638080, while the sum is 64.

The spelling of 31723504877872 in words is "thirty-one trillion, seven hundred twenty-three billion, five hundred four million, eight hundred seventy-seven thousand, eight hundred seventy-two".