23185 has 4 divisors (see below), whose sum is σ = 27828. Its totient is φ = 18544.

The previous prime is 23173. The next prime is 23189. The reversal of 23185 is 58132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7056 + 16129 = 84^2 + 127^2 .

It is a cyclic number.

It is not a de Polignac number, because 23185 - 2⁷ = 23057 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2314 + ... + 2323.

It is an arithmetic number, because the mean of its divisors is an integer number (6957).

2²³¹⁸⁵ is an apocalyptic number.

It is an amenable number.

23185 is a deficient number, since it is larger than the sum of its proper divisors (4643).

23185 is an equidigital number, since it uses as much as digits as its factorization.

23185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642.

The product of its digits is 240, while the sum is 19.

The square root of 23185 is about 152.2662142433. The cubic root of 23185 is about 28.5147148799.

The spelling of 23185 in words is "twenty-three thousand, one hundred eighty-five".