31996700 has 18 divisors (see below), whose sum is σ = 69433056. Its totient is φ = 12798640.

The previous prime is 31996693. The next prime is 31996717. The reversal of 31996700 is 769913.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159884 + ... + 160083.

It is an arithmetic number, because the mean of its divisors is an integer number (3857392).

Almost surely, 2^31996700 is an apocalyptic number.

It is an amenable number.

31996700 is an abundant number, since it is smaller than the sum of its proper divisors (37436356).

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

31996700 is a wasteful number, since it uses less digits than its factorization.

31996700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319981 (or 319974 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 31996700 is about 5656.5625604248. The cubic root of 31996700 is about 317.4692966362.

The spelling of 31996700 in words is "thirty-one million, nine hundred ninety-six thousand, seven hundred".