12431223043 has 4 divisors (see below), whose sum is σ = 13085497960. Its totient is φ = 11776948128.

The previous prime is 12431223041. The next prime is 12431223047. The reversal of 12431223043 is 34032213421.

12431223043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12431223043 - 2¹ = 12431223041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12431222999 and 12431223017.

It is not an unprimeable number, because it can be changed into a prime (12431223041) 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, 327137430 + ... + 327137467.

It is an arithmetic number, because the mean of its divisors is an integer number (3271374490).

Almost surely, 2^12431223043 is an apocalyptic number.

12431223043 is a deficient number, since it is larger than the sum of its proper divisors (654274917).

12431223043 is an equidigital number, since it uses as much as digits as its factorization.

12431223043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654274916.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 12431223043 its reverse (34032213421), we get a palindrome (46463436464).

The spelling of 12431223043 in words is "twelve billion, four hundred thirty-one million, two hundred twenty-three thousand, forty-three".