320412109 has 2 divisors, whose sum is σ = 320412110. Its totient is φ = 320412108.

The previous prime is 320412061. The next prime is 320412161. The reversal of 320412109 is 901214023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249482025 + 70930084 = 15795^2 + 8422^2 .

It is a cyclic number.

It is not a de Polignac number, because 320412109 - 2²⁷ = 186194381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320412109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320412179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160206054 + 160206055.

It is an arithmetic number, because the mean of its divisors is an integer number (160206055).

Almost surely, 2^320412109 is an apocalyptic number.

It is an amenable number.

320412109 is a deficient number, since it is larger than the sum of its proper divisors (1).

320412109 is an equidigital number, since it uses as much as digits as its factorization.

320412109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 320412109 is about 17900.0589105176. The cubic root of 320412109 is about 684.2838762463.

The spelling of 320412109 in words is "three hundred twenty million, four hundred twelve thousand, one hundred nine".