12323120243 has 4 divisors (see below), whose sum is σ = 14083566000. Its totient is φ = 10562674488.

The previous prime is 12323120233. The next prime is 12323120273. The reversal of 12323120243 is 34202132321.

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 12323120243 - 2²² = 12318925939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12323120233) 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, 880222868 + ... + 880222881.

It is an arithmetic number, because the mean of its divisors is an integer number (3520891500).

Almost surely, 2^12323120243 is an apocalyptic number.

12323120243 is a deficient number, since it is larger than the sum of its proper divisors (1760445757).

12323120243 is an equidigital number, since it uses as much as digits as its factorization.

12323120243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760445756.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12323120243 its reverse (34202132321), we get a palindrome (46525252564).

The spelling of 12323120243 in words is "twelve billion, three hundred twenty-three million, one hundred twenty thousand, two hundred forty-three".