320021313317 has 2 divisors, whose sum is σ = 320021313318. Its totient is φ = 320021313316.

The previous prime is 320021313191. The next prime is 320021313341. The reversal of 320021313317 is 713313120023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231759439396 + 88261873921 = 481414^2 + 297089^2 .

It is a cyclic number.

It is not a de Polignac number, because 320021313317 - 2¹⁰ = 320021312293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320021313917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160010656658 + 160010656659.

It is an arithmetic number, because the mean of its divisors is an integer number (160010656659).

Almost surely, 2^320021313317 is an apocalyptic number.

It is an amenable number.

320021313317 is a deficient number, since it is larger than the sum of its proper divisors (1).

320021313317 is an equidigital number, since it uses as much as digits as its factorization.

320021313317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The spelling of 320021313317 in words is "three hundred twenty billion, twenty-one million, three hundred thirteen thousand, three hundred seventeen".