320575349 has 2 divisors, whose sum is σ = 320575350. Its totient is φ = 320575348.

The previous prime is 320575327. The next prime is 320575417. The reversal of 320575349 is 943575023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221712100 + 98863249 = 14890^2 + 9943^2 .

It is a cyclic number.

It is not a de Polignac number, because 320575349 - 2²⁴ = 303798133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320575249) 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, 160287674 + 160287675.

It is an arithmetic number, because the mean of its divisors is an integer number (160287675).

Almost surely, 2^320575349 is an apocalyptic number.

It is an amenable number.

320575349 is a deficient number, since it is larger than the sum of its proper divisors (1).

320575349 is an equidigital number, since it uses as much as digits as its factorization.

320575349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 320575349 is about 17904.6180914310. The cubic root of 320575349 is about 684.4000636318.

The spelling of 320575349 in words is "three hundred twenty million, five hundred seventy-five thousand, three hundred forty-nine".