320306117 has 2 divisors, whose sum is σ = 320306118. Its totient is φ = 320306116.

The previous prime is 320306113. The next prime is 320306141. The reversal of 320306117 is 711603023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228644641 + 91661476 = 15121^2 + 9574^2 .

It is a cyclic number.

It is not a de Polignac number, because 320306117 - 2² = 320306113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320306092 and 320306101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320306113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160153058 + 160153059.

It is an arithmetic number, because the mean of its divisors is an integer number (160153059).

Almost surely, 2^320306117 is an apocalyptic number.

It is an amenable number.

320306117 is a deficient number, since it is larger than the sum of its proper divisors (1).

320306117 is an equidigital number, since it uses as much as digits as its factorization.

320306117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 320306117 is about 17897.0980049839. The cubic root of 320306117 is about 684.2084144545.

The spelling of 320306117 in words is "three hundred twenty million, three hundred six thousand, one hundred seventeen".