31274272 has 24 divisors (see below), whose sum is σ = 61762176. Its totient is φ = 15588672.

The previous prime is 31274263. The next prime is 31274279. The reversal of 31274272 is 27247213.

It is a self number, because there is not a number n which added to its sum of digits gives 31274272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31274279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10413 + ... + 13075.

It is an arithmetic number, because the mean of its divisors is an integer number (2573424).

Almost surely, 2^31274272 is an apocalyptic number.

31274272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31274272 is a deficient number, since it is larger than the sum of its proper divisors (30487904).

31274272 is a wasteful number, since it uses less digits than its factorization.

31274272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040 (or 3032 counting only the distinct ones).

The product of its digits is 4704, while the sum is 28.

The square root of 31274272 is about 5592.3404760440. The cubic root of 31274272 is about 315.0617901797.

The spelling of 31274272 in words is "thirty-one million, two hundred seventy-four thousand, two hundred seventy-two".