12113431123 has 2 divisors, whose sum is σ = 12113431124. Its totient is φ = 12113431122.

The previous prime is 12113431117. The next prime is 12113431129. The reversal of 12113431123 is 32113431121.

It is a balanced prime because it is at equal distance from previous prime (12113431117) and next prime (12113431129).

It is a cyclic number.

It is not a de Polignac number, because 12113431123 - 2²⁹ = 11576560211 is a prime.

It is a super-2 number, since 2×12113431123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12113431094 and 12113431103.

It is not a weakly prime, because it can be changed into another prime (12113431129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056715561 + 6056715562.

It is an arithmetic number, because the mean of its divisors is an integer number (6056715562).

Almost surely, 2^12113431123 is an apocalyptic number.

12113431123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12113431123 is an equidigital number, since it uses as much as digits as its factorization.

12113431123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

Adding to 12113431123 its reverse (32113431121), we get a palindrome (44226862244).

The spelling of 12113431123 in words is "twelve billion, one hundred thirteen million, four hundred thirty-one thousand, one hundred twenty-three".