U+0003, 
<control-0003>
(Abbreviation: ETX)
[unassigned: U+0000–U+0002][unassigned: U+0004–U+001F]
Basic Latin
[U+0020]
Presentations of 3︎
Text
style
Emoji
style
3︎ 3️
Note: Character's appearance
may be different on each system.
Text style is forced with &#xFE0E;
and emoji style with &#xFE0F;

Emoji