23365 has 4 divisors (see below), whose sum is σ = 28044. Its totient is φ = 18688.

The previous prime is 23357. The next prime is 23369. The reversal of 23365 is 56332.

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 16641 + 6724 = 129^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 23365 - 2³ = 23357 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 3² + 3⁹ + 6² + 5⁵ .

It is a Duffinian number.

23365 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23369) 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, 2332 + ... + 2341.

It is an arithmetic number, because the mean of its divisors is an integer number (7011).

2²³³⁶⁵ is an apocalyptic number.

It is an amenable number.

23365 is a deficient number, since it is larger than the sum of its proper divisors (4679).

23365 is an equidigital number, since it uses as much as digits as its factorization.

23365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4678.

The product of its digits is 540, while the sum is 19.

The square root of 23365 is about 152.8561415187. The cubic root of 23365 is about 28.5883173959.

Adding to 23365 its reverse (56332), we get a palindrome (79697).

The spelling of 23365 in words is "twenty-three thousand, three hundred sixty-five".