12131440023 has 16 divisors (see below), whose sum is σ = 17382366720. Its totient is φ = 7498271616.

The previous prime is 12131440019. The next prime is 12131440039. The reversal of 12131440023 is 32004413121.

It is not a de Polignac number, because 12131440023 - 2² = 12131440019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131440003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771743 + ... + 1778576.

It is an arithmetic number, because the mean of its divisors is an integer number (1086397920).

Almost surely, 2^12131440023 is an apocalyptic number.

12131440023 is a deficient number, since it is larger than the sum of its proper divisors (5250926697).

12131440023 is a wasteful number, since it uses less digits than its factorization.

12131440023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550406.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12131440023 its reverse (32004413121), we get a palindrome (44135853144).

The spelling of 12131440023 in words is "twelve billion, one hundred thirty-one million, four hundred forty thousand, twenty-three".