320222197 has 2 divisors, whose sum is σ = 320222198. Its totient is φ = 320222196.

The previous prime is 320222179. The next prime is 320222209. The reversal of 320222197 is 791222023.

Together with previous prime (320222179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281769796 + 38452401 = 16786^2 + 6201^2 .

It is a cyclic number.

It is not a de Polignac number, because 320222197 - 2¹¹ = 320220149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320222117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160111098 + 160111099.

It is an arithmetic number, because the mean of its divisors is an integer number (160111099).

Almost surely, 2^320222197 is an apocalyptic number.

It is an amenable number.

320222197 is a deficient number, since it is larger than the sum of its proper divisors (1).

320222197 is an equidigital number, since it uses as much as digits as its factorization.

320222197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 320222197 is about 17894.7533372215. The cubic root of 320222197 is about 684.1486551780.

The spelling of 320222197 in words is "three hundred twenty million, two hundred twenty-two thousand, one hundred ninety-seven".