12431203443 has 6 divisors (see below), whose sum is σ = 17956182764. Its totient is φ = 8287468956.

The previous prime is 12431203439. The next prime is 12431203487. The reversal of 12431203443 is 34430213421.

12431203443 is a `hidden beast` number, since 1 + 2 + 4 + 312 + 0 + 344 + 3 = 666.

It is not a de Polignac number, because 12431203443 - 2² = 12431203439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12431203243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 690622405 + ... + 690622422.

Almost surely, 2^12431203443 is an apocalyptic number.

12431203443 is a deficient number, since it is larger than the sum of its proper divisors (5524979321).

12431203443 is a wasteful number, since it uses less digits than its factorization.

12431203443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381244833 (or 1381244830 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 12431203443 its reverse (34430213421), we get a palindrome (46861416864).

The spelling of 12431203443 in words is "twelve billion, four hundred thirty-one million, two hundred three thousand, four hundred forty-three".