165324317 has 2 divisors, whose sum is σ = 165324318. Its totient is φ = 165324316.

The previous prime is 165324287. The next prime is 165324319. The reversal of 165324317 is 713423561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164198596 + 1125721 = 12814^2 + 1061^2 .

It is an emirp because it is prime and its reverse (713423561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165324317 - 2²⁴ = 148547101 is a prime.

Together with 165324319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165324319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82662158 + 82662159.

It is an arithmetic number, because the mean of its divisors is an integer number (82662159).

Almost surely, 2^165324317 is an apocalyptic number.

It is an amenable number.

165324317 is a deficient number, since it is larger than the sum of its proper divisors (1).

165324317 is an equidigital number, since it uses as much as digits as its factorization.

165324317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 165324317 is about 12857.8504035472. The cubic root of 165324317 is about 548.8397768236.

Adding to 165324317 its reverse (713423561), we get a palindrome (878747878).

The spelling of 165324317 in words is "one hundred sixty-five million, three hundred twenty-four thousand, three hundred seventeen".