318646306117 has 2 divisors, whose sum is σ = 318646306118. Its totient is φ = 318646306116.

The previous prime is 318646306109. The next prime is 318646306151. The reversal of 318646306117 is 711603646813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283230453636 + 35415852481 = 532194^2 + 188191^2 .

It is a cyclic number.

It is not a de Polignac number, because 318646306117 - 2³ = 318646306109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318646306717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159323153058 + 159323153059.

It is an arithmetic number, because the mean of its divisors is an integer number (159323153059).

Almost surely, 2^318646306117 is an apocalyptic number.

It is an amenable number.

318646306117 is a deficient number, since it is larger than the sum of its proper divisors (1).

318646306117 is an equidigital number, since it uses as much as digits as its factorization.

318646306117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 318646306117 in words is "three hundred eighteen billion, six hundred forty-six million, three hundred six thousand, one hundred seventeen".