12431303 has 4 divisors (see below), whose sum is σ = 12448608. Its totient is φ = 12414000.

The previous prime is 12431281. The next prime is 12431317. The reversal of 12431303 is 30313421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30313421 = 107 ⋅283303.

It is a cyclic number.

It is not a de Polignac number, because 12431303 - 2⁶ = 12431239 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 (12431803) 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, 7526 + ... + 9027.

It is an arithmetic number, because the mean of its divisors is an integer number (3112152).

Almost surely, 2^12431303 is an apocalyptic number.

12431303 is a deficient number, since it is larger than the sum of its proper divisors (17305).

12431303 is an equidigital number, since it uses as much as digits as its factorization.

12431303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17304.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 12431303 is about 3525.8052980844. The cubic root of 12431303 is about 231.6535094806.

Adding to 12431303 its reverse (30313421), we get a palindrome (42744724).

The spelling of 12431303 in words is "twelve million, four hundred thirty-one thousand, three hundred three".