230505 has 24 divisors (see below), whose sum is σ = 408576. Its totient is φ = 110880.

The previous prime is 230501. The next prime is 230507. The reversal of 230505 is 505032.

It is not a de Polignac number, because 230505 - 2² = 230501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (230501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1752 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (17024).

2²³⁰⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

230505 is a deficient number, since it is larger than the sum of its proper divisors (178071).

230505 is a wasteful number, since it uses less digits than its factorization.

230505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 230505 is about 480.1093625415. The cubic root of 230505 is about 61.3140659654.

Adding to 230505 its reverse (505032), we get a palindrome (735537).

The spelling of 230505 in words is "two hundred thirty thousand, five hundred five".