108305 has 4 divisors (see below), whose sum is σ = 129972. Its totient is φ = 86640.

The previous prime is 108301. The next prime is 108343. The reversal of 108305 is 503801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503801 = 59 ⋅8539.

It can be written as a sum of positive squares in 2 ways, for example, as 36481 + 71824 = 191^2 + 268^2 .

It is not a de Polignac number, because 108305 - 2² = 108301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108301) 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, 10826 + ... + 10835.

It is an arithmetic number, because the mean of its divisors is an integer number (32493).

2¹⁰⁸³⁰⁵ is an apocalyptic number.

It is an amenable number.

108305 is a deficient number, since it is larger than the sum of its proper divisors (21667).

108305 is an equidigital number, since it uses as much as digits as its factorization.

108305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21666.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 108305 is about 329.0972500645. The cubic root of 108305 is about 47.6668188062. Note that the first 3 decimals are identical.

The spelling of 108305 in words is "one hundred eight thousand, three hundred five".