12311132123 has 4 divisors (see below), whose sum is σ = 12311357520. Its totient is φ = 12310906728.

The previous prime is 12311132111. The next prime is 12311132153. The reversal of 12311132123 is 32123111321.

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 12311132123 - 2¹⁰ = 12311131099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12311132095 and 12311132104.

It is not an unprimeable number, because it can be changed into a prime (12311132153) 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, 26738 + ... + 159176.

It is an arithmetic number, because the mean of its divisors is an integer number (3077839380).

Almost surely, 2^12311132123 is an apocalyptic number.

12311132123 is a deficient number, since it is larger than the sum of its proper divisors (225397).

12311132123 is an equidigital number, since it uses as much as digits as its factorization.

12311132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225396.

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

Adding to 12311132123 its reverse (32123111321), we get a palindrome (44434243444).

The spelling of 12311132123 in words is "twelve billion, three hundred eleven million, one hundred thirty-two thousand, one hundred twenty-three".