321434252617117 has 2 divisors, whose sum is σ = 321434252617118. Its totient is φ = 321434252617116.

The previous prime is 321434252617033. The next prime is 321434252617129. The reversal of 321434252617117 is 711716252434123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272949685973721 + 48484566643396 = 16521189^2 + 6963086^2 .

It is an emirp because it is prime and its reverse (711716252434123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321434252617117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321434252117117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160717126308558 + 160717126308559.

It is an arithmetic number, because the mean of its divisors is an integer number (160717126308559).

Almost surely, 2^{321434252617117} is an apocalyptic number.

It is an amenable number.

321434252617117 is a deficient number, since it is larger than the sum of its proper divisors (1).

321434252617117 is an equidigital number, since it uses as much as digits as its factorization.

321434252617117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 49.

The spelling of 321434252617117 in words is "three hundred twenty-one trillion, four hundred thirty-four billion, two hundred fifty-two million, six hundred seventeen thousand, one hundred seventeen".