320445043 has 2 divisors, whose sum is σ = 320445044. Its totient is φ = 320445042.

The previous prime is 320445011. The next prime is 320445077. The reversal of 320445043 is 340544023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320445043 - 2⁵ = 320445011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320444999 and 320445017.

It is not a weakly prime, because it can be changed into another prime (320445943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160222521 + 160222522.

It is an arithmetic number, because the mean of its divisors is an integer number (160222522).

Almost surely, 2^320445043 is an apocalyptic number.

320445043 is a deficient number, since it is larger than the sum of its proper divisors (1).

320445043 is an equidigital number, since it uses as much as digits as its factorization.

320445043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 320445043 is about 17900.9788279859. The cubic root of 320445043 is about 684.3073204633.

Adding to 320445043 its reverse (340544023), we get a palindrome (660989066).

The spelling of 320445043 in words is "three hundred twenty million, four hundred forty-five thousand, forty-three".