230545 has 12 divisors (see below), whose sum is σ = 322164. Its totient is φ = 157920.

The previous prime is 230539. The next prime is 230551. The reversal of 230545 is 545032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (230539) and next prime (230551).

It can be written as a sum of positive squares in 2 ways, for example, as 112896 + 117649 = 336^2 + 343^2 .

It is a de Polignac number, because none of the positive numbers 2^k-230545 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 226 + ... + 715.

It is an arithmetic number, because the mean of its divisors is an integer number (26847).

2²³⁰⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

230545 is a deficient number, since it is larger than the sum of its proper divisors (91619).

230545 is an equidigital number, since it uses as much as digits as its factorization.

230545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 230545 is about 480.1510179100. The cubic root of 230545 is about 61.3176124116.

Adding to 230545 its reverse (545032), we get a palindrome (775577).

The spelling of 230545 in words is "two hundred thirty thousand, five hundred forty-five".