As character names:

U+334C SQUARE MEGATON character (㍌)

As raw characters:

㍌

As a string of HTML entities:

㍌

Decoder output:

Byte number 1 is decimal 227, hex 0xE3, octal \343, binary 11100011
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 141, hex 0x8D, octal \215, binary 10001101
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 140, hex 0x8C, octal \214, binary 10001100
This is continuation byte 2, expecting 0 more.

U+334C	SQUARE MEGATON
	* megaton
	# <square> 30E1 30AC 30C8 30F3