321123000017 has 2 divisors, whose sum is σ = 321123000018. Its totient is φ = 321123000016.

The previous prime is 321122999917. The next prime is 321123000049. The reversal of 321123000017 is 710000321123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313179021376 + 7943978641 = 559624^2 + 89129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321123000017 is a prime.

It is a super-2 number, since 2×321123000017² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321123000617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160561500008 + 160561500009.

It is an arithmetic number, because the mean of its divisors is an integer number (160561500009).

Almost surely, 2^321123000017 is an apocalyptic number.

It is an amenable number.

321123000017 is a deficient number, since it is larger than the sum of its proper divisors (1).

321123000017 is an equidigital number, since it uses as much as digits as its factorization.

321123000017 is an evil number, because the sum of its binary digits is even.

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

The spelling of 321123000017 in words is "three hundred twenty-one billion, one hundred twenty-three million, seventeen", and thus it is an aban number.