12317999 has 4 divisors (see below), whose sum is σ = 12618480. Its totient is φ = 12017520.

The previous prime is 12317993. The next prime is 12318043. The reversal of 12317999 is 99971321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99971321 = 179 ⋅558499.

It is a cyclic number.

It is not a de Polignac number, because 12317999 - 2⁴ = 12317983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 300439 = 12317999 / (1 + 2 + 3 + 1 + 7 + 9 + 9 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12317993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150179 + ... + 150260.

It is an arithmetic number, because the mean of its divisors is an integer number (3154620).

Almost surely, 2^12317999 is an apocalyptic number.

12317999 is a deficient number, since it is larger than the sum of its proper divisors (300481).

12317999 is an equidigital number, since it uses as much as digits as its factorization.

12317999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300480.

The product of its digits is 30618, while the sum is 41.

The square root of 12317999 is about 3509.7006994899. The cubic root of 12317999 is about 230.9475652931.

The spelling of 12317999 in words is "twelve million, three hundred seventeen thousand, nine hundred ninety-nine".