320553193 has 2 divisors, whose sum is σ = 320553194. Its totient is φ = 320553192.

The previous prime is 320553179. The next prime is 320553209. The reversal of 320553193 is 391355023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301473769 + 19079424 = 17363^2 + 4368^2 .

It is a cyclic number.

It is not a de Polignac number, because 320553193 - 2⁹ = 320552681 is a prime.

It is not a weakly prime, because it can be changed into another prime (320550193) 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, 160276596 + 160276597.

It is an arithmetic number, because the mean of its divisors is an integer number (160276597).

Almost surely, 2^320553193 is an apocalyptic number.

It is an amenable number.

320553193 is a deficient number, since it is larger than the sum of its proper divisors (1).

320553193 is an equidigital number, since it uses as much as digits as its factorization.

320553193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 320553193 is about 17903.9993576854. Note that the first 3 decimals coincide. The cubic root of 320553193 is about 684.3842962340.

The spelling of 320553193 in words is "three hundred twenty million, five hundred fifty-three thousand, one hundred ninety-three".