2168317 has 2 divisors, whose sum is σ = 2168318. Its totient is φ = 2168316.

The previous prime is 2168303. The next prime is 2168323. The reversal of 2168317 is 7138612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1999396 + 168921 = 1414^2 + 411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2168317 is a prime.

It is a super-2 number, since 2×2168317² = 9403197224978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084158 + 1084159.

It is an arithmetic number, because the mean of its divisors is an integer number (1084159).

2^2168317 is an apocalyptic number.

It is an amenable number.

2168317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168317 is an equidigital number, since it uses as much as digits as its factorization.

2168317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 2168317 is about 1472.5206280389. The cubic root of 2168317 is about 129.4317803306.

It can be divided in two parts, 2168 and 317, that added together give a triangular number (2485 = T₇₀).

The spelling of 2168317 in words is "two million, one hundred sixty-eight thousand, three hundred seventeen".