31880332 has 12 divisors (see below), whose sum is σ = 60862536. Its totient is φ = 14491040.

The previous prime is 31880327. The next prime is 31880353. The reversal of 31880332 is 23308813.

It is a self number, because there is not a number n which added to its sum of digits gives 31880332.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362233 + ... + 362320.

It is an arithmetic number, because the mean of its divisors is an integer number (5071878).

Almost surely, 2^31880332 is an apocalyptic number.

It is an amenable number.

31880332 is a deficient number, since it is larger than the sum of its proper divisors (28982204).

31880332 is a wasteful number, since it uses less digits than its factorization.

31880332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724568 (or 724566 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 31880332 is about 5646.2670854291. The cubic root of 31880332 is about 317.0839637338.

The spelling of 31880332 in words is "thirty-one million, eight hundred eighty thousand, three hundred thirty-two".