320299109 has 6 divisors (see below), whose sum is σ = 346832946. Its totient is φ = 295660560.

The previous prime is 320299079. The next prime is 320299123. The reversal of 320299109 is 901992023.

It can be written as a sum of positive squares in 3 ways, for example, as 247009 + 320052100 = 497^2 + 17890^2 .

It is not a de Polignac number, because 320299109 - 2¹² = 320295013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320299709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 947462 + ... + 947799.

It is an arithmetic number, because the mean of its divisors is an integer number (57805491).

Almost surely, 2^320299109 is an apocalyptic number.

It is an amenable number.

320299109 is a deficient number, since it is larger than the sum of its proper divisors (26533837).

320299109 is a wasteful number, since it uses less digits than its factorization.

320299109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895287 (or 1895274 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 320299109 is about 17896.9022179817. The cubic root of 320299109 is about 684.2034244701.

The spelling of 320299109 in words is "three hundred twenty million, two hundred ninety-nine thousand, one hundred nine".