1323

1323 may refer to the calendar year 1323 CE or to the positive integer 1323. As a year, 1323 falls in the early 14th century. It lies within the period of the Avignon Papacy, when the pope resided in Avignon rather than Rome. Regional histories vary, but the year is situated amid ongoing medieval political and religious developments that shaped Europe in that era.

As a number, 1323 is an odd composite. Its prime factorization is 3^3 × 7^2, making it divisible by 3, 9, 7, 21, 27, 49 and 63. The sum of its digits is 9, so it is divisible by 9 and is a Harshad number in base 10. In various numeral systems, 1323 is written as MCCCXXIII in Roman numerals, 0x52B in hexadecimal, 10100101011 in binary, and 2453 in octal.