320545843 has 2 divisors, whose sum is σ = 320545844. Its totient is φ = 320545842.

The previous prime is 320545793. The next prime is 320545853. The reversal of 320545843 is 348545023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320545843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320545799 and 320545808.

It is not a weakly prime, because it can be changed into another prime (320545853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160272921 + 160272922.

It is an arithmetic number, because the mean of its divisors is an integer number (160272922).

Almost surely, 2^320545843 is an apocalyptic number.

320545843 is a deficient number, since it is larger than the sum of its proper divisors (1).

320545843 is an equidigital number, since it uses as much as digits as its factorization.

320545843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 320545843 is about 17903.7940951073. The cubic root of 320545843 is about 684.3790654193.

The spelling of 320545843 in words is "three hundred twenty million, five hundred forty-five thousand, eight hundred forty-three".