2117317 has 2 divisors, whose sum is σ = 2117318. Its totient is φ = 2117316.

The previous prime is 2117293. The next prime is 2117321. The reversal of 2117317 is 7137112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1887876 + 229441 = 1374^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117317 - 2¹⁹ = 1593029 is a prime.

It is equal to p₁₅₇₀₀₉ and since 2117317 and 157009 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2114317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058658 + 1058659.

It is an arithmetic number, because the mean of its divisors is an integer number (1058659).

2^2117317 is an apocalyptic number.

It is an amenable number.

2117317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117317 is an equidigital number, since it uses as much as digits as its factorization.

2117317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294, while the sum is 22.

The square root of 2117317 is about 1455.1003401828. The cubic root of 2117317 is about 128.4089500204.

The spelling of 2117317 in words is "two million, one hundred seventeen thousand, three hundred seventeen".