U+0031 "1" Digit One Unicode Character
Unicode Version 17.0
1
U+0031 "1" Digit One is a fundamental numeric symbol in the ASCII and Unicode standards, representing the integer value one. It belongs to the Basic Latin block, where it serves as a standard decimal digit used globally in writing systems for mathematics, dates, counting, and identifiers. As a simple, single-stroke glyph, it is distinct from other numerical characters and is encoded at the same code point across virtually all modern text systems, ensuring consistent digital representation and interoperability.
General Properties
| Code Point | U+0031 |
| Version Added | 1.1 |
| Name | Digit One |
| Block | Basic Latin |
| General Category | Decimal Number |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | European Number |
Encodings
| HTML Decimal Encoding | 1 |
| HTML Hex Encoding | 1 |
| UTF-8 Encoding | 0x31 |
| UTF-16 Encoding | 0x0031 |
| UTF-32 Encoding | 0x00000031 |
| C/C++/Java Escape | \u0031 |