31996156 has 12 divisors (see below), whose sum is σ = 56085120. Its totient is φ = 15971840.

The previous prime is 31996127. The next prime is 31996163. The reversal of 31996156 is 65169913.

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, 3676 + ... + 8803.

It is an arithmetic number, because the mean of its divisors is an integer number (4673760).

Almost surely, 2^31996156 is an apocalyptic number.

It is an amenable number.

31996156 is a deficient number, since it is larger than the sum of its proper divisors (24088964).

31996156 is a wasteful number, since it uses less digits than its factorization.

31996156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13124 (or 13122 counting only the distinct ones).

The product of its digits is 43740, while the sum is 40.

The square root of 31996156 is about 5656.5144744798. The cubic root of 31996156 is about 317.4674974478.

The spelling of 31996156 in words is "thirty-one million, nine hundred ninety-six thousand, one hundred fifty-six".