320666341 has 2 divisors, whose sum is σ = 320666342. Its totient is φ = 320666340.

The previous prime is 320666321. The next prime is 320666417. The reversal of 320666341 is 143666023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276390625 + 44275716 = 16625^2 + 6654^2 .

It is a cyclic number.

It is not a de Polignac number, because 320666341 - 2¹¹ = 320664293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320666321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160333170 + 160333171.

It is an arithmetic number, because the mean of its divisors is an integer number (160333171).

Almost surely, 2^320666341 is an apocalyptic number.

It is an amenable number.

320666341 is a deficient number, since it is larger than the sum of its proper divisors (1).

320666341 is an equidigital number, since it uses as much as digits as its factorization.

320666341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 320666341 is about 17907.1589315558. The cubic root of 320666341 is about 684.4648108014.

The spelling of 320666341 in words is "three hundred twenty million, six hundred sixty-six thousand, three hundred forty-one".