31274864 has 10 divisors (see below), whose sum is σ = 60595080. Its totient is φ = 15637424.

The previous prime is 31274857. The next prime is 31274869. The reversal of 31274864 is 46847213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31274869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977324 + ... + 977355.

It is an arithmetic number, because the mean of its divisors is an integer number (6059508).

Almost surely, 2^31274864 is an apocalyptic number.

It is an amenable number.

31274864 is a deficient number, since it is larger than the sum of its proper divisors (29320216).

31274864 is a wasteful number, since it uses less digits than its factorization.

31274864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954687 (or 1954681 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 31274864 is about 5592.3934053319. The cubic root of 31274864 is about 315.0637781332.

The spelling of 31274864 in words is "thirty-one million, two hundred seventy-four thousand, eight hundred sixty-four".