31683612 has 48 divisors (see below), whose sum is σ = 77801472. Its totient is φ = 10021440.

The previous prime is 31683607. The next prime is 31683623. The reversal of 31683612 is 21638613.

It is a self number, because there is not a number n which added to its sum of digits gives 31683612.

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 15 ways as a sum of consecutive naturals, for example, 18913 + ... + 20519.

It is an arithmetic number, because the mean of its divisors is an integer number (1620864).

Almost surely, 2^31683612 is an apocalyptic number.

It is an amenable number.

31683612 is an abundant number, since it is smaller than the sum of its proper divisors (46117860).

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

31683612 is a wasteful number, since it uses less digits than its factorization.

31683612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698 (or 1696 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 31683612 is about 5628.8197697208. The cubic root of 31683612 is about 316.4304207787.

The spelling of 31683612 in words is "thirty-one million, six hundred eighty-three thousand, six hundred twelve".