12321403023 has 4 divisors (see below), whose sum is σ = 16428537368. Its totient is φ = 8214268680.

The previous prime is 12321403007. The next prime is 12321403027. The reversal of 12321403023 is 32030412321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32030412321 = 3 ⋅10676804107.

It is not a de Polignac number, because 12321403023 - 2⁴ = 12321403007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321403027) 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, 2053567168 + ... + 2053567173.

It is an arithmetic number, because the mean of its divisors is an integer number (4107134342).

Almost surely, 2^12321403023 is an apocalyptic number.

12321403023 is a deficient number, since it is larger than the sum of its proper divisors (4107134345).

12321403023 is an equidigital number, since it uses as much as digits as its factorization.

12321403023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107134344.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12321403023 its reverse (32030412321), we get a palindrome (44351815344).

The spelling of 12321403023 in words is "twelve billion, three hundred twenty-one million, four hundred three thousand, twenty-three".