31679944 has 16 divisors (see below), whose sum is σ = 59598000. Its totient is φ = 15787152.

The previous prime is 31679941. The next prime is 31679971. The reversal of 31679944 is 44997613.

It is a self number, because there is not a number n which added to its sum of digits gives 31679944.

It is not an unprimeable number, because it can be changed into a prime (31679941) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3994 + ... + 8905.

It is an arithmetic number, because the mean of its divisors is an integer number (3724875).

Almost surely, 2^31679944 is an apocalyptic number.

It is an amenable number.

31679944 is a deficient number, since it is larger than the sum of its proper divisors (27918056).

31679944 is a wasteful number, since it uses less digits than its factorization.

31679944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13212 (or 13208 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 31679944 is about 5628.4939371025. The cubic root of 31679944 is about 316.4182092967.

It can be divided in two parts, 31679 and 944, that added together give a palindrome (32623).

The spelling of 31679944 in words is "thirty-one million, six hundred seventy-nine thousand, nine hundred forty-four".