31994868 has 24 divisors (see below), whose sum is σ = 75427072. Its totient is φ = 10554624.

The previous prime is 31994857. The next prime is 31994869. The reversal of 31994868 is 86849913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31994869) 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, 12580 + ... + 14907.

Almost surely, 2^31994868 is an apocalyptic number.

It is an amenable number.

31994868 is an abundant number, since it is smaller than the sum of its proper divisors (43432204).

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

31994868 is a wasteful number, since it uses less digits than its factorization.

31994868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27591 (or 27589 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 31994868 is about 5656.4006223039. The cubic root of 31994868 is about 317.4632375234.

The spelling of 31994868 in words is "thirty-one million, nine hundred ninety-four thousand, eight hundred sixty-eight".