12131233113 has 4 divisors (see below), whose sum is σ = 16174977488. Its totient is φ = 8087488740.

The previous prime is 12131233073. The next prime is 12131233129. The reversal of 12131233113 is 31133213121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31133213121 = 3 ⋅10377737707.

It is not a de Polignac number, because 12131233113 - 2⁸ = 12131232857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12131233113.

It is not an unprimeable number, because it can be changed into a prime (12131233613) 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 3 ways as a sum of consecutive naturals, for example, 2021872183 + ... + 2021872188.

It is an arithmetic number, because the mean of its divisors is an integer number (4043744372).

Almost surely, 2^12131233113 is an apocalyptic number.

It is an amenable number.

12131233113 is a deficient number, since it is larger than the sum of its proper divisors (4043744375).

12131233113 is an equidigital number, since it uses as much as digits as its factorization.

12131233113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043744374.

The product of its digits is 324, while the sum is 21.

Adding to 12131233113 its reverse (31133213121), we get a palindrome (43264446234).

The spelling of 12131233113 in words is "twelve billion, one hundred thirty-one million, two hundred thirty-three thousand, one hundred thirteen".