As character names:

U+30C7 KATAKANA LETTER DE character (デ)

As raw characters:

デ

As a string of HTML entities:

デ

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 135, hex 0x87, octal \207, binary 10000111
This is continuation byte 2, expecting 0 more.

U+30C7	KATAKANA LETTER DE
	: 30C6 3099