308109 has 8 divisors (see below), whose sum is σ = 424192. Its totient is φ = 198720.

The previous prime is 308107. The next prime is 308117. The reversal of 308109 is 901803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 308109 - 2¹ = 308107 is a prime.

It is a Duffinian 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 308109.

It is not an unprimeable number, because it can be changed into a prime (308101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1564 + ... + 1749.

It is an arithmetic number, because the mean of its divisors is an integer number (53024).

2³⁰⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

308109 is a deficient number, since it is larger than the sum of its proper divisors (116083).

308109 is a wasteful number, since it uses less digits than its factorization.

308109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 308109 is about 555.0756705171. The cubic root of 308109 is about 67.5410997984.

The spelling of 308109 in words is "three hundred eight thousand, one hundred nine".