331636117 has 2 divisors, whose sum is σ = 331636118. Its totient is φ = 331636116.

The previous prime is 331636111. The next prime is 331636133. The reversal of 331636117 is 711636133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168844036 + 162792081 = 12994^2 + 12759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331636117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331636111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165818058 + 165818059.

It is an arithmetic number, because the mean of its divisors is an integer number (165818059).

Almost surely, 2^331636117 is an apocalyptic number.

It is an amenable number.

331636117 is a deficient number, since it is larger than the sum of its proper divisors (1).

331636117 is an equidigital number, since it uses as much as digits as its factorization.

331636117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 31.

The square root of 331636117 is about 18210.8790836686. The cubic root of 331636117 is about 692.1824873449.

The spelling of 331636117 in words is "three hundred thirty-one million, six hundred thirty-six thousand, one hundred seventeen".