230945 has 32 divisors (see below), whose sum is σ = 362880. Its totient is φ = 138240.

The previous prime is 230941. The next prime is 230959. The reversal of 230945 is 549032.

It is not a de Polignac number, because 230945 - 2² = 230941 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 230945.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230941) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 12146 + ... + 12164.

It is an arithmetic number, because the mean of its divisors is an integer number (11340).

2²³⁰⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

230945 is a deficient number, since it is larger than the sum of its proper divisors (131935).

230945 is a wasteful number, since it uses less digits than its factorization.

230945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 230945 is about 480.5673730082. The cubic root of 230945 is about 61.3530543335.

Adding to 230945 its reverse (549032), we get a palindrome (779977).

The spelling of 230945 in words is "two hundred thirty thousand, nine hundred forty-five".