321315053619169 has 3 divisors (see below), whose sum is σ = 321315071544433. Its totient is φ = 321315035693906.

The previous prime is 321315053619149. The next prime is 321315053619193. The reversal of 321315053619169 is 961916350513123.

It is a happy number.

The square root of 321315053619169 is 17925263.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 321315053619169 - 2¹⁹ = 321315053094881 is a prime.

It is a super-2 number, since 2×321315053619169² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321315053619149) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8962632 + ... + 26887894.

Almost surely, 2^{321315053619169} is an apocalyptic number.

321315053619169 is the 17925263-rd square number.

321315053619169 is the 8962632-nd centered octagonal number.

It is an amenable number.

321315053619169 is a deficient number, since it is larger than the sum of its proper divisors (17925264).

321315053619169 is an frugal number, since it uses more digits than its factorization.

321315053619169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35850526 (or 17925263 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 55.

The spelling of 321315053619169 in words is "three hundred twenty-one trillion, three hundred fifteen billion, fifty-three million, six hundred nineteen thousand, one hundred sixty-nine".