320225611 has 2 divisors, whose sum is σ = 320225612. Its totient is φ = 320225610.

The previous prime is 320225603. The next prime is 320225623. The reversal of 320225611 is 116522023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320225611 - 2³ = 320225603 is a prime.

It is not a weakly prime, because it can be changed into another prime (320225671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160112805 + 160112806.

It is an arithmetic number, because the mean of its divisors is an integer number (160112806).

Almost surely, 2^320225611 is an apocalyptic number.

320225611 is a deficient number, since it is larger than the sum of its proper divisors (1).

320225611 is an equidigital number, since it uses as much as digits as its factorization.

320225611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 320225611 is about 17894.8487280558. The cubic root of 320225611 is about 684.1510864848.

Adding to 320225611 its reverse (116522023), we get a palindrome (436747634).

The spelling of 320225611 in words is "three hundred twenty million, two hundred twenty-five thousand, six hundred eleven".