31494568 has 16 divisors (see below), whose sum is σ = 67488480. Its totient is φ = 13497648.

The previous prime is 31494553. The next prime is 31494581. The reversal of 31494568 is 86549413.

It is a self number, because there is not a number n which added to its sum of digits gives 31494568.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281146 + ... + 281257.

It is an arithmetic number, because the mean of its divisors is an integer number (4218030).

Almost surely, 2^31494568 is an apocalyptic number.

It is an amenable number.

31494568 is an abundant number, since it is smaller than the sum of its proper divisors (35993912).

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

31494568 is a wasteful number, since it uses less digits than its factorization.

31494568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562416 (or 562412 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 31494568 is about 5612.0021382747. The cubic root of 31494568 is about 315.7998251539.

The spelling of 31494568 in words is "thirty-one million, four hundred ninety-four thousand, five hundred sixty-eight".