320413109 has 2 divisors, whose sum is σ = 320413110. Its totient is φ = 320413108.

The previous prime is 320413103. The next prime is 320413111. The reversal of 320413109 is 901314023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315169009 + 5244100 = 17753^2 + 2290^2 .

It is an emirp because it is prime and its reverse (901314023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320413109 is a prime.

Together with 320413111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320413103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160206554 + 160206555.

It is an arithmetic number, because the mean of its divisors is an integer number (160206555).

Almost surely, 2^320413109 is an apocalyptic number.

It is an amenable number.

320413109 is a deficient number, since it is larger than the sum of its proper divisors (1).

320413109 is an equidigital number, since it uses as much as digits as its factorization.

320413109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 320413109 is about 17900.0868433648. The cubic root of 320413109 is about 684.2845881244.

The spelling of 320413109 in words is "three hundred twenty million, four hundred thirteen thousand, one hundred nine".