12043431 has 8 divisors (see below), whose sum is σ = 17842160. Its totient is φ = 8028936.

The previous prime is 12043417. The next prime is 12043441. The reversal of 12043431 is 13434021.

It is a de Polignac number, because none of the positive numbers 2^k-12043431 is a prime.

It is a super-2 number, since 2×12043431² = 290088460503522, 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 (12043441) 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, 223000 + ... + 223053.

It is an arithmetic number, because the mean of its divisors is an integer number (2230270).

Almost surely, 2^12043431 is an apocalyptic number.

12043431 is a deficient number, since it is larger than the sum of its proper divisors (5798729).

12043431 is an equidigital number, since it uses as much as digits as its factorization.

12043431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446062 (or 446056 counting only the distinct ones).

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

The square root of 12043431 is about 3470.3646782435. The cubic root of 12043431 is about 229.2187164344.

Adding to 12043431 its reverse (13434021), we get a palindrome (25477452).

The spelling of 12043431 in words is "twelve million, forty-three thousand, four hundred thirty-one".