Undefined Character (U+13731)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓜱` `𓜱`
UTF-8 Encoding:	`0xF0 0x93 0x9C 0xB1`
UTF-16 Encoding:	`0xD80D 0xDF31`
UTF-32 Encoding:	`0x00013731`

References