12031233311323 has 4 divisors (see below), whose sum is σ = 12033826813120. Its totient is φ = 12028639809528.

The previous prime is 12031233311297. The next prime is 12031233311341. The reversal of 12031233311323 is 32311333213021.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031233311323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031233311291 and 12031233311300.

It is not an unprimeable number, because it can be changed into a prime (12031233311623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296743940 + ... + 1296753217.

It is an arithmetic number, because the mean of its divisors is an integer number (3008456703280).

Almost surely, 2^{12031233311323} is an apocalyptic number.

12031233311323 is a deficient number, since it is larger than the sum of its proper divisors (2593501797).

12031233311323 is an equidigital number, since it uses as much as digits as its factorization.

12031233311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593501796.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 12031233311323 its reverse (32311333213021), we get a palindrome (44342566524344).

The spelling of 12031233311323 in words is "twelve trillion, thirty-one billion, two hundred thirty-three million, three hundred eleven thousand, three hundred twenty-three".