165317 has 2 divisors, whose sum is σ = 165318. Its totient is φ = 165316.

The previous prime is 165313. The next prime is 165331. The reversal of 165317 is 713561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83521 + 81796 = 289^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 165317 - 2² = 165313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165292 and 165301.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 165317.

It is not a weakly prime, because it can be changed into another prime (165311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82658 + 82659.

It is an arithmetic number, because the mean of its divisors is an integer number (82659).

2¹⁶⁵³¹⁷ is an apocalyptic number.

It is an amenable number.

165317 is a deficient number, since it is larger than the sum of its proper divisors (1).

165317 is an equidigital number, since it uses as much as digits as its factorization.

165317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630, while the sum is 23.

The square root of 165317 is about 406.5919330238. The cubic root of 165317 is about 54.8831679769.

Adding to 165317 its reverse (713561), we get a palindrome (878878).

The spelling of 165317 in words is "one hundred sixty-five thousand, three hundred seventeen".