12320443 has 2 divisors, whose sum is σ = 12320444. Its totient is φ = 12320442.

The previous prime is 12320431. The next prime is 12320449. The reversal of 12320443 is 34402321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12320443 - 2⁵ = 12320411 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12320443.

It is not a weakly prime, because it can be changed into another prime (12320449) 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, 6160221 + 6160222.

It is an arithmetic number, because the mean of its divisors is an integer number (6160222).

Almost surely, 2^12320443 is an apocalyptic number.

12320443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320443 is an equidigital number, since it uses as much as digits as its factorization.

12320443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 12320443 is about 3510.0488600588. The cubic root of 12320443 is about 230.9628382965.

Adding to 12320443 its reverse (34402321), we get a palindrome (46722764).

The spelling of 12320443 in words is "twelve million, three hundred twenty thousand, four hundred forty-three".