12331331023 has 4 divisors (see below), whose sum is σ = 13452361128. Its totient is φ = 11210300920.

The previous prime is 12331331017. The next prime is 12331331027. The reversal of 12331331023 is 32013313321.

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-12331331023 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12331330985 and 12331331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331331027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560515036 + ... + 560515057.

It is an arithmetic number, because the mean of its divisors is an integer number (3363090282).

Almost surely, 2^12331331023 is an apocalyptic number.

12331331023 is a deficient number, since it is larger than the sum of its proper divisors (1121030105).

12331331023 is a wasteful number, since it uses less digits than its factorization.

12331331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121030104.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 12331331023 its reverse (32013313321), we get a palindrome (44344644344).

The spelling of 12331331023 in words is "twelve billion, three hundred thirty-one million, three hundred thirty-one thousand, twenty-three".