320445347 has 2 divisors, whose sum is σ = 320445348. Its totient is φ = 320445346.

The previous prime is 320445319. The next prime is 320445421. The reversal of 320445347 is 743544023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320445347 - 2⁸ = 320445091 is a prime.

It is not a weakly prime, because it can be changed into another prime (320445947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160222673 + 160222674.

It is an arithmetic number, because the mean of its divisors is an integer number (160222674).

Almost surely, 2^320445347 is an apocalyptic number.

320445347 is a deficient number, since it is larger than the sum of its proper divisors (1).

320445347 is an equidigital number, since it uses as much as digits as its factorization.

320445347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 32.

The square root of 320445347 is about 17900.9873191397. The cubic root of 320445347 is about 684.3075368596.

The spelling of 320445347 in words is "three hundred twenty million, four hundred forty-five thousand, three hundred forty-seven".