12431143441 has 4 divisors (see below), whose sum is σ = 12570819300. Its totient is φ = 12291467584.

The previous prime is 12431143429. The next prime is 12431143519. The reversal of 12431143441 is 14434113421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3469681216 + 8961462225 = 58904^2 + 94665^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431143441 - 2²⁹ = 11894272529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12431149441) 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, 69837796 + ... + 69837973.

It is an arithmetic number, because the mean of its divisors is an integer number (3142704825).

Almost surely, 2^12431143441 is an apocalyptic number.

It is an amenable number.

12431143441 is a deficient number, since it is larger than the sum of its proper divisors (139675859).

12431143441 is an equidigital number, since it uses as much as digits as its factorization.

12431143441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139675858.

The product of its digits is 4608, while the sum is 28.

Adding to 12431143441 its reverse (14434113421), we get a palindrome (26865256862).

The spelling of 12431143441 in words is "twelve billion, four hundred thirty-one million, one hundred forty-three thousand, four hundred forty-one".