| Name | FULLWIDTH NUMBER SIGN |
| Unicode Version | 1.1 |
| Block（ブロック） | Halfwidth and Fullwidth Forms（半角・全角形） |
| Plane（面） | Basic Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | ＃ ＃ |
| UTF-8 Encoding | ＃ efbc83 |
| UTF-16 Encoding | ＃ ff03 |
| UTF-32 Encoding | ＃ 0000ff03 |