320641147 has 2 divisors, whose sum is σ = 320641148. Its totient is φ = 320641146.

The previous prime is 320641133. The next prime is 320641177. The reversal of 320641147 is 741146023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320641147 - 2⁷ = 320641019 is a prime.

It is not a weakly prime, because it can be changed into another prime (320641127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160320573 + 160320574.

It is an arithmetic number, because the mean of its divisors is an integer number (160320574).

Almost surely, 2^320641147 is an apocalyptic number.

320641147 is a deficient number, since it is larger than the sum of its proper divisors (1).

320641147 is an equidigital number, since it uses as much as digits as its factorization.

320641147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 320641147 is about 17906.4554560639. The cubic root of 320641147 is about 684.4468847353.

The spelling of 320641147 in words is "three hundred twenty million, six hundred forty-one thousand, one hundred forty-seven".