320342947 has 2 divisors, whose sum is σ = 320342948. Its totient is φ = 320342946.

The previous prime is 320342887. The next prime is 320342977. The reversal of 320342947 is 749243023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320342947 - 2¹¹ = 320340899 is a prime.

It is not a weakly prime, because it can be changed into another prime (320342977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160171473 + 160171474.

It is an arithmetic number, because the mean of its divisors is an integer number (160171474).

Almost surely, 2^320342947 is an apocalyptic number.

320342947 is a deficient number, since it is larger than the sum of its proper divisors (1).

320342947 is an equidigital number, since it uses as much as digits as its factorization.

320342947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 320342947 is about 17898.1269131717. The cubic root of 320342947 is about 684.2346377336.

The spelling of 320342947 in words is "three hundred twenty million, three hundred forty-two thousand, nine hundred forty-seven".