12321314243 has 4 divisors (see below), whose sum is σ = 14081502000. Its totient is φ = 10561126488.

The previous prime is 12321314221. The next prime is 12321314263. The reversal of 12321314243 is 34241312321.

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 12321314243 - 2⁸ = 12321313987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12321314263) 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, 880093868 + ... + 880093881.

It is an arithmetic number, because the mean of its divisors is an integer number (3520375500).

Almost surely, 2^12321314243 is an apocalyptic number.

12321314243 is a deficient number, since it is larger than the sum of its proper divisors (1760187757).

12321314243 is an equidigital number, since it uses as much as digits as its factorization.

12321314243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760187756.

The product of its digits is 3456, while the sum is 26.

Adding to 12321314243 its reverse (34241312321), we get a palindrome (46562626564).

The spelling of 12321314243 in words is "twelve billion, three hundred twenty-one million, three hundred fourteen thousand, two hundred forty-three".