12320456243 has 2 divisors, whose sum is σ = 12320456244. Its totient is φ = 12320456242.

The previous prime is 12320456179. The next prime is 12320456321. The reversal of 12320456243 is 34265402321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12320456243 - 2⁶ = 12320456179 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12320456543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160228121 + 6160228122.

It is an arithmetic number, because the mean of its divisors is an integer number (6160228122).

Almost surely, 2^12320456243 is an apocalyptic number.

12320456243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320456243 is an equidigital number, since it uses as much as digits as its factorization.

12320456243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 12320456243 its reverse (34265402321), we get a palindrome (46585858564).

The spelling of 12320456243 in words is "twelve billion, three hundred twenty million, four hundred fifty-six thousand, two hundred forty-three".