31979896 has 32 divisors (see below), whose sum is σ = 64839600. Its totient is φ = 14699520.

The previous prime is 31979887. The next prime is 31979903. The reversal of 31979896 is 69897913.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33960 + ... + 34888.

Almost surely, 2^31979896 is an apocalyptic number.

It is an amenable number.

31979896 is an abundant number, since it is smaller than the sum of its proper divisors (32859704).

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

31979896 is a wasteful number, since it uses less digits than its factorization.

31979896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1275 counting only the distinct ones).

The product of its digits is 734832, while the sum is 52.

The square root of 31979896 is about 5655.0770109699. The cubic root of 31979896 is about 317.4137108182.

The spelling of 31979896 in words is "thirty-one million, nine hundred seventy-nine thousand, eight hundred ninety-six".