31623668 has 12 divisors (see below), whose sum is σ = 56519232. Its totient is φ = 15475320.

The previous prime is 31623667. The next prime is 31623671. The reversal of 31623668 is 86632613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31623667) 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, 83918 + ... + 84293.

It is an arithmetic number, because the mean of its divisors is an integer number (4709936).

Almost surely, 2^31623668 is an apocalyptic number.

It is an amenable number.

31623668 is a deficient number, since it is larger than the sum of its proper divisors (24895564).

31623668 is a wasteful number, since it uses less digits than its factorization.

31623668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168262 (or 168260 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 31623668 is about 5623.4925091086. The cubic root of 31623668 is about 316.2307373166.

The spelling of 31623668 in words is "thirty-one million, six hundred twenty-three thousand, six hundred sixty-eight".