31996064 has 24 divisors (see below), whose sum is σ = 63127008. Its totient is φ = 15963840.

The previous prime is 31996043. The next prime is 31996067. The reversal of 31996064 is 46069913.

It is a super-2 number, since 2×31996064² = 2047496222984192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31996067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21389 + ... + 22835.

It is an arithmetic number, because the mean of its divisors is an integer number (2630292).

Almost surely, 2^31996064 is an apocalyptic number.

It is an amenable number.

31996064 is a deficient number, since it is larger than the sum of its proper divisors (31130944).

31996064 is a wasteful number, since it uses less digits than its factorization.

31996064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 31996064 is about 5656.5063422576. The cubic root of 31996064 is about 317.4671931713.

The spelling of 31996064 in words is "thirty-one million, nine hundred ninety-six thousand, sixty-four".