230 (number)

• a composite number, with its divisors being 2, 5, 10, 23, 46, and 115.
• a sphenic number because it is the product of 3 primes. It is also the first sphenic number to immediately precede another sphenic number.
• palindromic and a repdigit in bases 22, 45, 114, 229
• a Harshad number in bases 2, 6, 10, 12, 23.
• a happy number.
• a nontotient since there is no integer with 230 coprimes below it.
• the sum of the coprime counts for the first 27 integers.
• the aliquot sum of both 454 and 52441.
• part of the 41-aliquot tree.
• the maximal number of pieces that can be obtained by cutting an annulus with 20 cuts.