318608527213 has 2 divisors, whose sum is σ = 318608527214. Its totient is φ = 318608527212.

The previous prime is 318608527201. The next prime is 318608527327. The reversal of 318608527213 is 312725806813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244919081449 + 73689445764 = 494893^2 + 271458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318608527213 is a prime.

It is a super-2 number, since 2×318608527213² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318608522213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159304263606 + 159304263607.

It is an arithmetic number, because the mean of its divisors is an integer number (159304263607).

Almost surely, 2^318608527213 is an apocalyptic number.

It is an amenable number.

318608527213 is a deficient number, since it is larger than the sum of its proper divisors (1).

318608527213 is an equidigital number, since it uses as much as digits as its factorization.

318608527213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 318608527213 in words is "three hundred eighteen billion, six hundred eight million, five hundred twenty-seven thousand, two hundred thirteen".