| Name | |
| Unicode Version | 4.1 |
| Block（ブロック） | CJK Compatibility Ideographs（CJK互換漢字） |
| Plane（面） | Basic Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | 難 難 |
| UTF-8 Encoding | 難 efab87 |
| UTF-16 Encoding | 難 fac7 |
| UTF-32 Encoding | 難 0000fac7 |