31818968 has 32 divisors (see below), whose sum is σ = 64650960. Its totient is φ = 14622720.

The previous prime is 31818967. The next prime is 31818971. The reversal of 31818968 is 86981813.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31818967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3128 + ... + 8568.

Almost surely, 2^31818968 is an apocalyptic number.

It is an amenable number.

31818968 is an abundant number, since it is smaller than the sum of its proper divisors (32831992).

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

31818968 is a wasteful number, since it uses less digits than its factorization.

31818968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507 (or 5503 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 31818968 is about 5640.8304353171. The cubic root of 31818968 is about 316.8803895487.

The spelling of 31818968 in words is "thirty-one million, eight hundred eighteen thousand, nine hundred sixty-eight".