313

Traits of 313

 * Odd Number
 * Palindrome Number
 * Roman Numerals: CCCXIII
 * Binary: 100111001
 * Pythagorean Prime
 * Happy Number
 * Twin Prime with 311

Examples of 313

 * Number of days Sergei Krikalev spent on space station
 * Area code for Detroit
 * Donal Duck's license plate number