230305 has 4 divisors (see below), whose sum is σ = 276372. Its totient is φ = 184240.

The previous prime is 230303. The next prime is 230309. The reversal of 230305 is 503032.

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 43681 + 186624 = 209^2 + 432^2 .

It is not a de Polignac number, because 230305 - 2¹ = 230303 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230303) 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, 23026 + ... + 23035.

It is an arithmetic number, because the mean of its divisors is an integer number (69093).

2²³⁰³⁰⁵ is an apocalyptic number.

It is an amenable number.

230305 is a deficient number, since it is larger than the sum of its proper divisors (46067).

230305 is an equidigital number, since it uses as much as digits as its factorization.

230305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46066.

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 230305 is about 479.9010314638. The cubic root of 230305 is about 61.2963275771.

Adding to 230305 its reverse (503032), we get a palindrome (733337).

It can be divided in two parts, 230 and 305, that added together give a palindrome (535).

The spelling of 230305 in words is "two hundred thirty thousand, three hundred five".