12131323043 has 4 divisors (see below), whose sum is σ = 13864369200. Its totient is φ = 10398276888.

The previous prime is 12131323019. The next prime is 12131323081. The reversal of 12131323043 is 34032313121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34032313121 = 103 ⋅330410807.

It is a cyclic number.

It is not a de Polignac number, because 12131323043 - 2¹⁸ = 12131060899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131323003) 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, 866523068 + ... + 866523081.

It is an arithmetic number, because the mean of its divisors is an integer number (3466092300).

Almost surely, 2^12131323043 is an apocalyptic number.

12131323043 is a deficient number, since it is larger than the sum of its proper divisors (1733046157).

12131323043 is an equidigital number, since it uses as much as digits as its factorization.

12131323043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733046156.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 12131323043 its reverse (34032313121), we get a palindrome (46163636164).

The spelling of 12131323043 in words is "twelve billion, one hundred thirty-one million, three hundred twenty-three thousand, forty-three".