12031144439 has 4 divisors (see below), whose sum is σ = 12032893224. Its totient is φ = 12029395656.

The previous prime is 12031144399. The next prime is 12031144441. The reversal of 12031144439 is 93444113021.

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 12031144439 - 2²⁸ = 11762708983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031141439) 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, 864032 + ... + 877845.

It is an arithmetic number, because the mean of its divisors is an integer number (3008223306).

Almost surely, 2^12031144439 is an apocalyptic number.

12031144439 is a deficient number, since it is larger than the sum of its proper divisors (1748785).

12031144439 is an equidigital number, since it uses as much as digits as its factorization.

12031144439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748784.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 12031144439 in words is "twelve billion, thirty-one million, one hundred forty-four thousand, four hundred thirty-nine".