320045113 has 2 divisors, whose sum is σ = 320045114. Its totient is φ = 320045112.

The previous prime is 320045083. The next prime is 320045149. The reversal of 320045113 is 311540023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319265424 + 779689 = 17868^2 + 883^2 .

It is a cyclic number.

It is not a de Polignac number, because 320045113 - 2¹³ = 320036921 is a prime.

It is not a weakly prime, because it can be changed into another prime (320042113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160022556 + 160022557.

It is an arithmetic number, because the mean of its divisors is an integer number (160022557).

Almost surely, 2^320045113 is an apocalyptic number.

It is an amenable number.

320045113 is a deficient number, since it is larger than the sum of its proper divisors (1).

320045113 is an equidigital number, since it uses as much as digits as its factorization.

320045113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 320045113 is about 17889.8047222433. The cubic root of 320045113 is about 684.0225197207.

Adding to 320045113 its reverse (311540023), we get a palindrome (631585136).

The spelling of 320045113 in words is "three hundred twenty million, forty-five thousand, one hundred thirteen".