12323132231 has 4 divisors (see below), whose sum is σ = 12436188600. Its totient is φ = 12210075864.

The previous prime is 12323132207. The next prime is 12323132279. The reversal of 12323132231 is 13223132321.

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 12323132231 - 2³⁰ = 11249390407 is a prime.

It is a super-2 number, since 2×12323132231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12323132197 and 12323132206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323132281) 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, 56528021 + ... + 56528238.

It is an arithmetic number, because the mean of its divisors is an integer number (3109047150).

Almost surely, 2^12323132231 is an apocalyptic number.

12323132231 is a deficient number, since it is larger than the sum of its proper divisors (113056369).

12323132231 is a wasteful number, since it uses less digits than its factorization.

12323132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113056368.

The product of its digits is 1296, while the sum is 23.

Adding to 12323132231 its reverse (13223132321), we get a palindrome (25546264552).

The spelling of 12323132231 in words is "twelve billion, three hundred twenty-three million, one hundred thirty-two thousand, two hundred thirty-one".