12431269 has 4 divisors (see below), whose sum is σ = 12445344. Its totient is φ = 12417196.

The previous prime is 12431239. The next prime is 12431281. The reversal of 12431269 is 96213421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12431269 - 2¹⁹ = 11906981 is a prime.

It is a super-2 number, since 2×12431269² = 309072897900722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5617 + ... + 7510.

It is an arithmetic number, because the mean of its divisors is an integer number (3111336).

Almost surely, 2^12431269 is an apocalyptic number.

It is an amenable number.

12431269 is a deficient number, since it is larger than the sum of its proper divisors (14075).

12431269 is an equidigital number, since it uses as much as digits as its factorization.

12431269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14074.

The product of its digits is 2592, while the sum is 28.

The square root of 12431269 is about 3525.8004764876. The cubic root of 12431269 is about 231.6532982872.

The spelling of 12431269 in words is "twelve million, four hundred thirty-one thousand, two hundred sixty-nine".