31996396 has 24 divisors (see below), whose sum is σ = 58519440. Its totient is φ = 15288000.

The previous prime is 31996351. The next prime is 31996403. The reversal of 31996396 is 69369913.

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, 10351 + ... + 13081.

It is an arithmetic number, because the mean of its divisors is an integer number (2438310).

Almost surely, 2^31996396 is an apocalyptic number.

It is an amenable number.

31996396 is a deficient number, since it is larger than the sum of its proper divisors (26523044).

31996396 is a wasteful number, since it uses less digits than its factorization.

31996396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865 (or 2863 counting only the distinct ones).

The product of its digits is 236196, while the sum is 46.

The square root of 31996396 is about 5656.5356889177. The cubic root of 31996396 is about 317.4682912099.

The spelling of 31996396 in words is "thirty-one million, nine hundred ninety-six thousand, three hundred ninety-six".