131215

131215 is a six-digit integer that can appear in mathematics, data labeling, and as a date representation in certain formats. It is an odd composite number, with prime factorization 5 × 7 × 23 × 163. As a numeric value, it is between 131,000 and 132,000 and can be used in arithmetic, coding, or bookkeeping contexts like any other six-digit identifier.

As a date, 131215 is commonly interpreted in the ddmmyy format as 13 December 2015. In locales or systems that use month-day-year formatting, the string would not typically represent a valid date, since 13 is not a valid month. Some databases or software applications may treat 131215 as a plain string rather than a date, depending on field definitions and locale settings.

In practical use, 131215 often appears as an internal code, serial number, or model identifier within product catalogs, inventory systems, or documentation. In such cases its meaning is determined by the issuing organization and carries no universal significance beyond that context.

There is no widely recognized historical event, person, or entity specifically associated with the number 131215 as an identifier. When encountered, its meaning is typically determined by surrounding context, such as whether it is being used as a date, a numeric code, or a simple count.

See also: other six-digit numbers, date formats, numeric factorization.