230565 has 16 divisors (see below), whose sum is σ = 388800. Its totient is φ = 116352.

The previous prime is 230563. The next prime is 230567. The reversal of 230565 is 565032.

It is an interprime number because it is at equal distance from previous prime (230563) and next prime (230567).

It is not a de Polignac number, because 230565 - 2¹ = 230563 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 3¹¹ + 5⁵ + 0 + 6⁶ + 5⁵ .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120 + ... + 689.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2²³⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

230565 is a deficient number, since it is larger than the sum of its proper divisors (158235).

230565 is a wasteful number, since it uses less digits than its factorization.

230565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 230565 is about 480.1718442391. The cubic root of 230565 is about 61.3193854809.

Adding to 230565 its reverse (565032), we get a palindrome (795597).

The spelling of 230565 in words is "two hundred thirty thousand, five hundred sixty-five".