12232431 has 8 divisors (see below), whose sum is σ = 18122160. Its totient is φ = 8154936.

The previous prime is 12232421. The next prime is 12232433. The reversal of 12232431 is 13423221.

12232431 is a `hidden beast` number, since 1 + 2 + 232 + 431 = 666.

It is not a de Polignac number, because 12232431 - 2²³ = 3843823 is a prime.

It is a super-2 number, since 2×12232431² = 299264736339522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232433) 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, 226500 + ... + 226553.

It is an arithmetic number, because the mean of its divisors is an integer number (2265270).

Almost surely, 2^12232431 is an apocalyptic number.

12232431 is a deficient number, since it is larger than the sum of its proper divisors (5889729).

12232431 is an equidigital number, since it uses as much as digits as its factorization.

12232431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453062 (or 453056 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 12232431 is about 3497.4892422994. The cubic root of 12232431 is about 230.4115567662.

Adding to 12232431 its reverse (13423221), we get a palindrome (25655652).

The spelling of 12232431 in words is "twelve million, two hundred thirty-two thousand, four hundred thirty-one".