313563365321 has 2 divisors, whose sum is σ = 313563365322. Its totient is φ = 313563365320.

The previous prime is 313563365309. The next prime is 313563365327. The reversal of 313563365321 is 123563365313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313420825600 + 142539721 = 559840^2 + 11939^2 .

It is a cyclic number.

It is not a de Polignac number, because 313563365321 - 2³⁴ = 296383496137 is a prime.

It is not a weakly prime, because it can be changed into another prime (313563365327) 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, 156781682660 + 156781682661.

It is an arithmetic number, because the mean of its divisors is an integer number (156781682661).

Almost surely, 2^313563365321 is an apocalyptic number.

It is an amenable number.

313563365321 is a deficient number, since it is larger than the sum of its proper divisors (1).

313563365321 is an equidigital number, since it uses as much as digits as its factorization.

313563365321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 41.

The spelling of 313563365321 in words is "three hundred thirteen billion, five hundred sixty-three million, three hundred sixty-five thousand, three hundred twenty-one".