320415947 has 2 divisors, whose sum is σ = 320415948. Its totient is φ = 320415946.

The previous prime is 320415941. The next prime is 320416081. The reversal of 320415947 is 749514023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320415947 - 2⁶ = 320415883 is a prime.

It is not a weakly prime, because it can be changed into another prime (320415941) 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, 160207973 + 160207974.

It is an arithmetic number, because the mean of its divisors is an integer number (160207974).

Almost surely, 2^320415947 is an apocalyptic number.

320415947 is a deficient number, since it is larger than the sum of its proper divisors (1).

320415947 is an equidigital number, since it uses as much as digits as its factorization.

320415947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 320415947 is about 17900.1661165476. The cubic root of 320415947 is about 684.2866084266.

The spelling of 320415947 in words is "three hundred twenty million, four hundred fifteen thousand, nine hundred forty-seven".