As character names:

U+30C1 KATAKANA LETTER TI character (チ)

As raw characters:

チ

As a string of HTML entities:

チ

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 131, hex 0x83, octal \203, binary 10000011
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 129, hex 0x81, octal \201, binary 10000001
This is continuation byte 2, expecting 0 more.

U+30C1	KATAKANA LETTER TI
	= CHI