31742980 has 24 divisors (see below), whose sum is σ = 67276440. Its totient is φ = 12579840.

The previous prime is 31742969. The next prime is 31742993. The reversal of 31742980 is 8924713.

It can be written as a sum of positive squares in 4 ways, for example, as 11600836 + 20142144 = 3406^2 + 4488^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5101 + ... + 9460.

It is an arithmetic number, because the mean of its divisors is an integer number (2803185).

Almost surely, 2^31742980 is an apocalyptic number.

It is an amenable number.

31742980 is an abundant number, since it is smaller than the sum of its proper divisors (35533460).

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

31742980 is a wasteful number, since it uses less digits than its factorization.

31742980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14679 (or 14677 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 31742980 is about 5634.0908760864. The cubic root of 31742980 is about 316.6279373995.

The spelling of 31742980 in words is "thirty-one million, seven hundred forty-two thousand, nine hundred eighty".