The Roman numeral "CCCXXIII" represents the number 323. In this numeral, "CCC" stands for 300, "XX" represents 20, and "III" signifies 3. Roman numerals are a numeral system originating from ancient Rome, using combinations of letters from the Latin alphabet. The number 323 can be found in various contexts, such as in history, mathematics, and even in popular culture. For example, it may refer to the year 323 AD, which was notable for the death of Emperor Constantine the Great, or it could represent a specific area code in North America.