31374172 has 24 divisors (see below), whose sum is σ = 57047760. Its totient is φ = 15079680.

The previous prime is 31374169. The next prime is 31374179. The reversal of 31374172 is 27147313.

It is a self number, because there is not a number n which added to its sum of digits gives 31374172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31374179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35172 + ... + 36052.

It is an arithmetic number, because the mean of its divisors is an integer number (2376990).

Almost surely, 2^31374172 is an apocalyptic number.

It is an amenable number.

31374172 is a deficient number, since it is larger than the sum of its proper divisors (25673588).

31374172 is a wasteful number, since it uses less digits than its factorization.

31374172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1219 counting only the distinct ones).

The product of its digits is 3528, while the sum is 28.

The square root of 31374172 is about 5601.2652142172. The cubic root of 31374172 is about 315.3969028969.

The spelling of 31374172 in words is "thirty-one million, three hundred seventy-four thousand, one hundred seventy-two".