320109 has 4 divisors (see below), whose sum is σ = 426816. Its totient is φ = 213404.

The previous prime is 320107. The next prime is 320113. The reversal of 320109 is 901023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320109 - 2¹ = 320107 is a prime.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320109.

It is not an unprimeable number, because it can be changed into a prime (320101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53349 + ... + 53354.

It is an arithmetic number, because the mean of its divisors is an integer number (106704).

2³²⁰¹⁰⁹ is an apocalyptic number.

It is an amenable number.

320109 is a deficient number, since it is larger than the sum of its proper divisors (106707).

320109 is a wasteful number, since it uses less digits than its factorization.

320109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106706.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 320109 is about 565.7817600453. The cubic root of 320109 is about 68.4068031262.

The spelling of 320109 in words is "three hundred twenty thousand, one hundred nine".