320113361 has 2 divisors, whose sum is σ = 320113362. Its totient is φ = 320113360.

The previous prime is 320113327. The next prime is 320113393. The reversal of 320113361 is 163311023.

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., 313962961 + 6150400 = 17719^2 + 2480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320113361 is a prime.

It is a super-3 number, since 3×320113361³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (320115361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160056680 + 160056681.

It is an arithmetic number, because the mean of its divisors is an integer number (160056681).

Almost surely, 2^320113361 is an apocalyptic number.

It is an amenable number.

320113361 is a deficient number, since it is larger than the sum of its proper divisors (1).

320113361 is an equidigital number, since it uses as much as digits as its factorization.

320113361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 320113361 is about 17891.7120757070. The cubic root of 320113361 is about 684.0711377114.

Adding to 320113361 its reverse (163311023), we get a palindrome (483424384).

The spelling of 320113361 in words is "three hundred twenty million, one hundred thirteen thousand, three hundred sixty-one".