12321031343 has 4 divisors (see below), whose sum is σ = 12328633848. Its totient is φ = 12313428840.

The previous prime is 12321031291. The next prime is 12321031357. The reversal of 12321031343 is 34313012321.

12321031343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12321031343 - 2¹⁶ = 12320965807 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 (12321037343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3798821 + ... + 3802062.

It is an arithmetic number, because the mean of its divisors is an integer number (3082158462).

Almost surely, 2^12321031343 is an apocalyptic number.

12321031343 is a deficient number, since it is larger than the sum of its proper divisors (7602505).

12321031343 is an equidigital number, since it uses as much as digits as its factorization.

12321031343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602504.

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

Adding to 12321031343 its reverse (34313012321), we get a palindrome (46634043664).

The spelling of 12321031343 in words is "twelve billion, three hundred twenty-one million, thirty-one thousand, three hundred forty-three".