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230 = 2523

230 has 8 divisors (see below), whose sum is σ = 432. Its totient is φ = 88.

The previous prime is 229. The next prime is 233. The reversal of 230 is 32.

It is a happy number.

230 is an esthetic number in base 4, because in such base it adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (5).

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

It is a Curzon number.

It is a plaindrome in base 7, base 8, base 11, base 13 and base 14.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2 + ... + 21.

It is an arithmetic number, because the mean of its divisors is an integer number (54).

230 is a deficient number, since it is larger than the sum of its proper divisors (202).

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

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

The sum of its prime factors is 30.

The product of its (nonzero) digits is 6, while the sum is 5.

The square root of 230 is about 15.1657508881. The cubic root of 230 is about 6.1269256752.

The spelling of 230 in words is "two hundred thirty", and is thus an aban number.

Divisors: 1 2 5 10 23 46 115 230