2317509 has 6 divisors (see below), whose sum is σ = 3347526. Its totient is φ = 1545000.

The previous prime is 2317507. The next prime is 2317519. The reversal of 2317509 is 9057132.

2317509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1512900 + 804609 = 1230^2 + 897^2 .

It is not a de Polignac number, because 2317509 - 2¹ = 2317507 is a prime.

2317509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2317501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128742 + ... + 128759.

It is an arithmetic number, because the mean of its divisors is an integer number (557921).

2^2317509 is an apocalyptic number.

It is an amenable number.

2317509 is a deficient number, since it is larger than the sum of its proper divisors (1030017).

2317509 is a wasteful number, since it uses less digits than its factorization.

2317509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257507 (or 257504 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2317509 is about 1522.3366907488. The cubic root of 2317509 is about 132.3347221283.

The spelling of 2317509 in words is "two million, three hundred seventeen thousand, five hundred nine".