31674654637 has 2 divisors, whose sum is σ = 31674654638. Its totient is φ = 31674654636.

The previous prime is 31674654559. The next prime is 31674654679. The reversal of 31674654637 is 73645647613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23171232841 + 8503421796 = 152221^2 + 92214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31674654637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31624654637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15837327318 + 15837327319.

It is an arithmetic number, because the mean of its divisors is an integer number (15837327319).

Almost surely, 2^31674654637 is an apocalyptic number.

It is an amenable number.

31674654637 is a deficient number, since it is larger than the sum of its proper divisors (1).

31674654637 is an equidigital number, since it uses as much as digits as its factorization.

31674654637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 52.

The spelling of 31674654637 in words is "thirty-one billion, six hundred seventy-four million, six hundred fifty-four thousand, six hundred thirty-seven".