31996460 has 12 divisors (see below), whose sum is σ = 67192608. Its totient is φ = 12798576.

The previous prime is 31996457. The next prime is 31996477. The reversal of 31996460 is 6469913.

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, 799892 + ... + 799931.

It is an arithmetic number, because the mean of its divisors is an integer number (5599384).

Almost surely, 2^31996460 is an apocalyptic number.

It is an amenable number.

31996460 is an abundant number, since it is smaller than the sum of its proper divisors (35196148).

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

31996460 is a wasteful number, since it uses less digits than its factorization.

31996460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599832 (or 1599830 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 31996460 is about 5656.5413460877. The cubic root of 31996460 is about 317.4685028792.

The spelling of 31996460 in words is "thirty-one million, nine hundred ninety-six thousand, four hundred sixty".