12403317 has 16 divisors (see below), whose sum is σ = 17183232. Its totient is φ = 7949760.

The previous prime is 12403309. The next prime is 12403351. The reversal of 12403317 is 71330421.

It is not a de Polignac number, because 12403317 - 2³ = 12403309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12403293 and 12403302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17983 + ... + 18659.

It is an arithmetic number, because the mean of its divisors is an integer number (1073952).

Almost surely, 2^12403317 is an apocalyptic number.

It is an amenable number.

12403317 is a deficient number, since it is larger than the sum of its proper divisors (4779915).

12403317 is a wasteful number, since it uses less digits than its factorization.

12403317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 12403317 is about 3521.8343231901. The cubic root of 12403317 is about 231.4795420317.

Adding to 12403317 its reverse (71330421), we get a palindrome (83733738).

It can be divided in two parts, 12403 and 317, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 12403317 in words is "twelve million, four hundred three thousand, three hundred seventeen".