31940368 has 40 divisors (see below), whose sum is σ = 67406400. Its totient is φ = 14603904.

The previous prime is 31940333. The next prime is 31940371. The reversal of 31940368 is 86304913.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7005 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (1685160).

Almost surely, 2^31940368 is an apocalyptic number.

31940368 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31940368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33703200).

31940368 is an abundant number, since it is smaller than the sum of its proper divisors (35466032).

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

31940368 is a wasteful number, since it uses less digits than its factorization.

31940368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679 (or 3673 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 31940368 is about 5651.5810177330. The cubic root of 31940368 is about 317.2828796435.

The spelling of 31940368 in words is "thirty-one million, nine hundred forty thousand, three hundred sixty-eight".