318875266321 has 2 divisors, whose sum is σ = 318875266322. Its totient is φ = 318875266320.

The previous prime is 318875266267. The next prime is 318875266337. The reversal of 318875266321 is 123662578813.

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., 198948113296 + 119927153025 = 446036^2 + 346305^2 .

It is a cyclic number.

It is not a de Polignac number, because 318875266321 - 2¹⁹ = 318874742033 is a prime.

It is not a weakly prime, because it can be changed into another prime (318875260321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159437633160 + 159437633161.

It is an arithmetic number, because the mean of its divisors is an integer number (159437633161).

Almost surely, 2^318875266321 is an apocalyptic number.

It is an amenable number.

318875266321 is a deficient number, since it is larger than the sum of its proper divisors (1).

318875266321 is an equidigital number, since it uses as much as digits as its factorization.

318875266321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 52.

The spelling of 318875266321 in words is "three hundred eighteen billion, eight hundred seventy-five million, two hundred sixty-six thousand, three hundred twenty-one".