31374312 has 32 divisors (see below), whose sum is σ = 79768800. Its totient is φ = 10280384.

The previous prime is 31374311. The next prime is 31374341. The reversal of 31374312 is 21347313.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (31374311) 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, 9663 + ... + 12494.

It is an arithmetic number, because the mean of its divisors is an integer number (2492775).

Almost surely, 2^31374312 is an apocalyptic number.

It is an amenable number.

31374312 is an abundant number, since it is smaller than the sum of its proper divisors (48394488).

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

31374312 is a wasteful number, since it uses less digits than its factorization.

31374312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22225 (or 22221 counting only the distinct ones).

The product of its digits is 1512, while the sum is 24.

The square root of 31374312 is about 5601.2777113798. The cubic root of 31374312 is about 315.3973720248.

The spelling of 31374312 in words is "thirty-one million, three hundred seventy-four thousand, three hundred twelve".