31425968 has 20 divisors (see below), whose sum is σ = 69586320. Its totient is φ = 13468224.

The previous prime is 31425941. The next prime is 31426001. The reversal of 31425968 is 86952413.

It is a happy number.

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, 140183 + ... + 140406.

It is an arithmetic number, because the mean of its divisors is an integer number (3479316).

Almost surely, 2^31425968 is an apocalyptic number.

It is an amenable number.

31425968 is an abundant number, since it is smaller than the sum of its proper divisors (38160352).

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

31425968 is a wasteful number, since it uses less digits than its factorization.

31425968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280604 (or 280598 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 31425968 is about 5605.8869057447. The cubic root of 31425968 is about 315.5703716584.

The spelling of 31425968 in words is "thirty-one million, four hundred twenty-five thousand, nine hundred sixty-eight".