12113431013 has 2 divisors, whose sum is σ = 12113431014. Its totient is φ = 12113431012.

The previous prime is 12113430997. The next prime is 12113431027. The reversal of 12113431013 is 31013431121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7302898849 + 4810532164 = 85457^2 + 69358^2 .

It is an emirp because it is prime and its reverse (31013431121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12113431013 - 2⁴ = 12113430997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12113431613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056715506 + 6056715507.

It is an arithmetic number, because the mean of its divisors is an integer number (6056715507).

Almost surely, 2^12113431013 is an apocalyptic number.

It is an amenable number.

12113431013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12113431013 is an equidigital number, since it uses as much as digits as its factorization.

12113431013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12113431013 its reverse (31013431121), we get a palindrome (43126862134).

The spelling of 12113431013 in words is "twelve billion, one hundred thirteen million, four hundred thirty-one thousand, thirteen".