318231614984401 has 2 divisors, whose sum is σ = 318231614984402. Its totient is φ = 318231614984400.

The previous prime is 318231614984383. The next prime is 318231614984429. The reversal of 318231614984401 is 104489416132813.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312942645334225 + 5288969650176 = 17690185^2 + 2299776^2 .

It is a cyclic number.

It is not a de Polignac number, because 318231614984401 - 2²¹ = 318231612887249 is a prime.

It is not a weakly prime, because it can be changed into another prime (318231614984441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159115807492200 + 159115807492201.

It is an arithmetic number, because the mean of its divisors is an integer number (159115807492201).

Almost surely, 2^{318231614984401} is an apocalyptic number.

It is an amenable number.

318231614984401 is a deficient number, since it is larger than the sum of its proper divisors (1).

318231614984401 is an equidigital number, since it uses as much as digits as its factorization.

318231614984401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 318231614984401 in words is "three hundred eighteen trillion, two hundred thirty-one billion, six hundred fourteen million, nine hundred eighty-four thousand, four hundred one".