12113434131 has 4 divisors (see below), whose sum is σ = 16151245512. Its totient is φ = 8075622752.

The previous prime is 12113434129. The next prime is 12113434141. The reversal of 12113434131 is 13143431121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12113434131 - 2¹ = 12113434129 is a prime.

It is a super-2 number, since 2×12113434131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12113434121) 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 in 3 ways as a sum of consecutive naturals, for example, 2018905686 + ... + 2018905691.

It is an arithmetic number, because the mean of its divisors is an integer number (4037811378).

Almost surely, 2^12113434131 is an apocalyptic number.

12113434131 is a deficient number, since it is larger than the sum of its proper divisors (4037811381).

12113434131 is an equidigital number, since it uses as much as digits as its factorization.

12113434131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037811380.

The product of its digits is 864, while the sum is 24.

Adding to 12113434131 its reverse (13143431121), we get a palindrome (25256865252).

The spelling of 12113434131 in words is "twelve billion, one hundred thirteen million, four hundred thirty-four thousand, one hundred thirty-one".