12320312243 has 2 divisors, whose sum is σ = 12320312244. Its totient is φ = 12320312242.

The previous prime is 12320312203. The next prime is 12320312287. The reversal of 12320312243 is 34221302321.

It is a weak prime.

It is an emirp because it is prime and its reverse (34221302321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12320312243 - 2¹⁶ = 12320246707 is a prime.

It is not a weakly prime, because it can be changed into another prime (12320312203) 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 as a sum of consecutive naturals, namely, 6160156121 + 6160156122.

It is an arithmetic number, because the mean of its divisors is an integer number (6160156122).

Almost surely, 2^12320312243 is an apocalyptic number.

12320312243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320312243 is an equidigital number, since it uses as much as digits as its factorization.

12320312243 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12320312243 its reverse (34221302321), we get a palindrome (46541614564).

The spelling of 12320312243 in words is "twelve billion, three hundred twenty million, three hundred twelve thousand, two hundred forty-three".