320343277 has 2 divisors, whose sum is σ = 320343278. Its totient is φ = 320343276.

The previous prime is 320343229. The next prime is 320343311. The reversal of 320343277 is 772343023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319908996 + 434281 = 17886^2 + 659^2 .

It is an emirp because it is prime and its reverse (772343023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320343277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320343227) 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, 160171638 + 160171639.

It is an arithmetic number, because the mean of its divisors is an integer number (160171639).

Almost surely, 2^320343277 is an apocalyptic number.

It is an amenable number.

320343277 is a deficient number, since it is larger than the sum of its proper divisors (1).

320343277 is an equidigital number, since it uses as much as digits as its factorization.

320343277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 31.

The square root of 320343277 is about 17898.1361320111. The cubic root of 320343277 is about 684.2348726874.

The spelling of 320343277 in words is "three hundred twenty million, three hundred forty-three thousand, two hundred seventy-seven".