320350997017 has 2 divisors, whose sum is σ = 320350997018. Its totient is φ = 320350997016.

The previous prime is 320350996997. The next prime is 320350997023. The reversal of 320350997017 is 710799053023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318068928576 + 2282068441 = 563976^2 + 47771^2 .

It is an emirp because it is prime and its reverse (710799053023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320350997017 is a prime.

It is a super-2 number, since 2×320350997017² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320350997077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160175498508 + 160175498509.

It is an arithmetic number, because the mean of its divisors is an integer number (160175498509).

Almost surely, 2^320350997017 is an apocalyptic number.

It is an amenable number.

320350997017 is a deficient number, since it is larger than the sum of its proper divisors (1).

320350997017 is an equidigital number, since it uses as much as digits as its factorization.

320350997017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 357210, while the sum is 46.

The spelling of 320350997017 in words is "three hundred twenty billion, three hundred fifty million, nine hundred ninety-seven thousand, seventeen".