321013020017 has 2 divisors, whose sum is σ = 321013020018. Its totient is φ = 321013020016.

The previous prime is 321013019989. The next prime is 321013020023. The reversal of 321013020017 is 710020310123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190633531456 + 130379488561 = 436616^2 + 361081^2 .

It is a cyclic number.

It is not a de Polignac number, because 321013020017 - 2³⁰ = 319939278193 is a prime.

It is not a weakly prime, because it can be changed into another prime (321013020037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160506510008 + 160506510009.

It is an arithmetic number, because the mean of its divisors is an integer number (160506510009).

Almost surely, 2^321013020017 is an apocalyptic number.

It is an amenable number.

321013020017 is a deficient number, since it is larger than the sum of its proper divisors (1).

321013020017 is an equidigital number, since it uses as much as digits as its factorization.

321013020017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The spelling of 321013020017 in words is "three hundred twenty-one billion, thirteen million, twenty thousand, seventeen".