31274872 has 8 divisors (see below), whose sum is σ = 58640400. Its totient is φ = 15637432.

The previous prime is 31274869. The next prime is 31274899. The reversal of 31274872 is 27847213.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954672 + ... + 1954687.

It is an arithmetic number, because the mean of its divisors is an integer number (7330050).

Almost surely, 2^31274872 is an apocalyptic number.

It is an amenable number.

31274872 is a deficient number, since it is larger than the sum of its proper divisors (27365528).

31274872 is a wasteful number, since it uses less digits than its factorization.

31274872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909365 (or 3909361 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 31274872 is about 5592.3941205891. The cubic root of 31274872 is about 315.0638049973.

The spelling of 31274872 in words is "thirty-one million, two hundred seventy-four thousand, eight hundred seventy-two".