218

218 is a natural number that follows 217 and precedes 219. It is an even composite number whose prime factorization is 2 × 109. The sum of its proper divisors equals 112, which makes 218 a deficient number. In various numeral systems, 218 is represented as 11011010 in binary, 332 in octal, DA in hexadecimal, and CCXVIII in Roman numerals.

As a calendar year, 218 CE falls in the early third century of the Roman Empire. It is associated with a period of transition within the imperial dynasty, reflecting the broader historical context of the era.

In the North American Numbering Plan, 218 is an area code designated for northern Minnesota, including cities such as Duluth and Brainerd. Area codes are commonly used to route telephone calls and indicate regional assignment within the broader telephone network.

Other uses of the number 218 appear in various domains as a label or identifier, such as model numbers, codes, or catalog entries. As with many integers, 218’s significance is context-dependent, ranging from mathematical properties to practical labeling in technology and communications.