31980268 has 18 divisors (see below), whose sum is σ = 59068716. Its totient is φ = 15147864.

The previous prime is 31980259. The next prime is 31980269. The reversal of 31980268 is 86208913.

It is not an unprimeable number, because it can be changed into a prime (31980269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9630 + ... + 12517.

Almost surely, 2^31980268 is an apocalyptic number.

31980268 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31980268 is a deficient number, since it is larger than the sum of its proper divisors (27088448).

31980268 is a wasteful number, since it uses less digits than its factorization.

31980268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22189 (or 22168 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 31980268 is about 5655.1099016730. The cubic root of 31980268 is about 317.4149415648.

The spelling of 31980268 in words is "thirty-one million, nine hundred eighty thousand, two hundred sixty-eight".