318523324489 has 2 divisors, whose sum is σ = 318523324490. Its totient is φ = 318523324488.

The previous prime is 318523324417. The next prime is 318523324507. The reversal of 318523324489 is 984423325813.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230791846464 + 87731478025 = 480408^2 + 296195^2 .

It is a cyclic number.

It is not a de Polignac number, because 318523324489 - 2¹¹ = 318523322441 is a prime.

It is a super-2 number, since 2×318523324489² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (318523324409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159261662244 + 159261662245.

It is an arithmetic number, because the mean of its divisors is an integer number (159261662245).

Almost surely, 2^318523324489 is an apocalyptic number.

It is an amenable number.

318523324489 is a deficient number, since it is larger than the sum of its proper divisors (1).

318523324489 is an equidigital number, since it uses as much as digits as its factorization.

318523324489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 52.

The spelling of 318523324489 in words is "three hundred eighteen billion, five hundred twenty-three million, three hundred twenty-four thousand, four hundred eighty-nine".