12317509 has 8 divisors (see below), whose sum is σ = 12891392. Its totient is φ = 11754720.

The previous prime is 12317497. The next prime is 12317531. The reversal of 12317509 is 90571321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12317509 - 2⁷ = 12317381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12317209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459 + ... + 4984.

It is an arithmetic number, because the mean of its divisors is an integer number (1611424).

Almost surely, 2^12317509 is an apocalyptic number.

It is an amenable number.

12317509 is a deficient number, since it is larger than the sum of its proper divisors (573883).

12317509 is an equidigital number, since it uses as much as digits as its factorization.

12317509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 12317509 is about 3509.6308922734. The cubic root of 12317509 is about 230.9445029502.

The spelling of 12317509 in words is "twelve million, three hundred seventeen thousand, five hundred nine".