31374657 has 12 divisors (see below), whose sum is σ = 45392724. Its totient is φ = 20882400.

The previous prime is 31374653. The next prime is 31374667. The reversal of 31374657 is 75647313.

It can be written as a sum of positive squares in 2 ways, for example, as 23970816 + 7403841 = 4896^2 + 2721^2 .

It is not a de Polignac number, because 31374657 - 2² = 31374653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31374653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3823 + ... + 8795.

It is an arithmetic number, because the mean of its divisors is an integer number (3782727).

Almost surely, 2^31374657 is an apocalyptic number.

It is an amenable number.

31374657 is a deficient number, since it is larger than the sum of its proper divisors (14018067).

31374657 is a wasteful number, since it uses less digits than its factorization.

31374657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680 (or 5677 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 31374657 is about 5601.3085078399. The cubic root of 31374657 is about 315.3985280841.

The spelling of 31374657 in words is "thirty-one million, three hundred seventy-four thousand, six hundred fifty-seven".