31996328 has 32 divisors (see below), whose sum is σ = 73839360. Its totient is φ = 12657600.

The previous prime is 31996303. The next prime is 31996337. The reversal of 31996328 is 82369913.

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, 21248 + ... + 22703.

It is an arithmetic number, because the mean of its divisors is an integer number (2307480).

Almost surely, 2^31996328 is an apocalyptic number.

It is an amenable number.

31996328 is an abundant number, since it is smaller than the sum of its proper divisors (41843032).

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

31996328 is a wasteful number, since it uses less digits than its factorization.

31996328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43977 (or 43973 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 31996328 is about 5656.5296781684. The cubic root of 31996328 is about 317.4680663111.

The spelling of 31996328 in words is "thirty-one million, nine hundred ninety-six thousand, three hundred twenty-eight".