31875972 has 24 divisors (see below), whose sum is σ = 74506656. Its totient is φ = 10606848.

The previous prime is 31875937. The next prime is 31875997. The reversal of 31875972 is 27957813.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6103 + ... + 10049.

It is an arithmetic number, because the mean of its divisors is an integer number (3104444).

Almost surely, 2^31875972 is an apocalyptic number.

It is an amenable number.

31875972 is an abundant number, since it is smaller than the sum of its proper divisors (42630684).

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

31875972 is a wasteful number, since it uses less digits than its factorization.

31875972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627 (or 4625 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 31875972 is about 5645.8809764287. The cubic root of 31875972 is about 317.0695081220.

The spelling of 31875972 in words is "thirty-one million, eight hundred seventy-five thousand, nine hundred seventy-two".