320218227193 has 2 divisors, whose sum is σ = 320218227194. Its totient is φ = 320218227192.

The previous prime is 320218227047. The next prime is 320218227221. The reversal of 320218227193 is 391722812023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241824947049 + 78393280144 = 491757^2 + 279988^2 .

It is a cyclic number.

It is not a de Polignac number, because 320218227193 - 2²¹ = 320216130041 is a prime.

It is not a weakly prime, because it can be changed into another prime (320218227293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160109113596 + 160109113597.

It is an arithmetic number, because the mean of its divisors is an integer number (160109113597).

Almost surely, 2^320218227193 is an apocalyptic number.

It is an amenable number.

320218227193 is a deficient number, since it is larger than the sum of its proper divisors (1).

320218227193 is an equidigital number, since it uses as much as digits as its factorization.

320218227193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 320218227193 in words is "three hundred twenty billion, two hundred eighteen million, two hundred twenty-seven thousand, one hundred ninety-three".