31648372 has 12 divisors (see below), whose sum is σ = 63296800. Its totient is φ = 13563576.

The previous prime is 31648313. The next prime is 31648381. The reversal of 31648372 is 27384613.

It is a happy number.

31648372 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 565122 + ... + 565177.

Almost surely, 2^31648372 is an apocalyptic number.

It is an amenable number.

31648372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31648372 is a wasteful number, since it uses less digits than its factorization.

31648372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130310 (or 1130308 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 31648372 is about 5625.6885800762. The cubic root of 31648372 is about 316.3130610028.

The spelling of 31648372 in words is "thirty-one million, six hundred forty-eight thousand, three hundred seventy-two".