2108317 has 2 divisors, whose sum is σ = 2108318. Its totient is φ = 2108316.

The previous prime is 2108299. The next prime is 2108339. The reversal of 2108317 is 7138012.

It is an a-pointer prime, because the next prime (2108339) can be obtained adding 2108317 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2105401 + 2916 = 1451^2 + 54^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2108317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2108347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054158 + 1054159.

It is an arithmetic number, because the mean of its divisors is an integer number (1054159).

2^2108317 is an apocalyptic number.

It is an amenable number.

2108317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108317 is an equidigital number, since it uses as much as digits as its factorization.

2108317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 2108317 is about 1452.0044765771. The cubic root of 2108317 is about 128.2267505832.

The spelling of 2108317 in words is "two million, one hundred eight thousand, three hundred seventeen".