12043134231 has 24 divisors (see below), whose sum is σ = 16749356544. Its totient is φ = 7689104640.

The previous prime is 12043134163. The next prime is 12043134251. The reversal of 12043134231 is 13243134021.

It is a happy number.

It is not a de Polignac number, because 12043134231 - 2²¹ = 12041037079 is a prime.

It is a super-2 number, since 2×12043134231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043134251) 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 23 ways as a sum of consecutive naturals, for example, 868156 + ... + 881918.

It is an arithmetic number, because the mean of its divisors is an integer number (697889856).

Almost surely, 2^12043134231 is an apocalyptic number.

12043134231 is a deficient number, since it is larger than the sum of its proper divisors (4706222313).

12043134231 is an equidigital number, since it uses as much as digits as its factorization.

12043134231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13991 (or 13894 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12043134231 its reverse (13243134021), we get a palindrome (25286268252).

The spelling of 12043134231 in words is "twelve billion, forty-three million, one hundred thirty-four thousand, two hundred thirty-one".