2009317 has 2 divisors, whose sum is σ = 2009318. Its totient is φ = 2009316.

The previous prime is 2009311. The next prime is 2009321. The reversal of 2009317 is 7139002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1179396 + 829921 = 1086^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 2009317 - 2¹⁵ = 1976549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2009311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004658 + 1004659.

It is an arithmetic number, because the mean of its divisors is an integer number (1004659).

2^2009317 is an apocalyptic number.

It is an amenable number.

2009317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009317 is an equidigital number, since it uses as much as digits as its factorization.

2009317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 2009317 is about 1417.5037918821. The cubic root of 2009317 is about 126.1874467100.

The spelling of 2009317 in words is "two million, nine thousand, three hundred seventeen".