320224273 has 2 divisors, whose sum is σ = 320224274. Its totient is φ = 320224272.

The previous prime is 320224253. The next prime is 320224279. The reversal of 320224273 is 372422023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285508609 + 34715664 = 16897^2 + 5892^2 .

It is an emirp because it is prime and its reverse (372422023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320224273 - 2⁵ = 320224241 is a prime.

It is not a weakly prime, because it can be changed into another prime (320224279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160112136 + 160112137.

It is an arithmetic number, because the mean of its divisors is an integer number (160112137).

Almost surely, 2^320224273 is an apocalyptic number.

It is an amenable number.

320224273 is a deficient number, since it is larger than the sum of its proper divisors (1).

320224273 is an equidigital number, since it uses as much as digits as its factorization.

320224273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 320224273 is about 17894.8113429564. The cubic root of 320224273 is about 684.1501336197.

Adding to 320224273 its reverse (372422023), we get a palindrome (692646296).

The spelling of 320224273 in words is "three hundred twenty million, two hundred twenty-four thousand, two hundred seventy-three".