As character names:

U+11A3F ZANABAZAR SQUARE INITIAL HEAD MARK character (𑨿)

As raw characters:

𑨿

As a string of HTML entities:

𑨿

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 145, hex 0x91, octal \221, binary 10010001
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 168, hex 0xA8, octal \250, binary 10101000
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 191, hex 0xBF, octal \277, binary 10111111
This is continuation byte 3, expecting 0 more.

U+11A3F	ZANABAZAR SQUARE INITIAL HEAD MARK
	x (tibetan mark initial brda rnying yig mgo mdun ma - 0FD3)
	x (mongolian birga - 1800)