318523324409 has 2 divisors, whose sum is σ = 318523324410. Its totient is φ = 318523324408.

The previous prime is 318523324391. The next prime is 318523324417. The reversal of 318523324409 is 904423325813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213262010809 + 105261313600 = 461803^2 + 324440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318523324409 is a prime.

It is a super-2 number, since 2×318523324409² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 318523324409.

It is not a weakly prime, because it can be changed into another prime (318523324489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159261662204 + 159261662205.

It is an arithmetic number, because the mean of its divisors is an integer number (159261662205).

Almost surely, 2^318523324409 is an apocalyptic number.

It is an amenable number.

318523324409 is a deficient number, since it is larger than the sum of its proper divisors (1).

318523324409 is an equidigital number, since it uses as much as digits as its factorization.

318523324409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 318523324409 in words is "three hundred eighteen billion, five hundred twenty-three million, three hundred twenty-four thousand, four hundred nine".