As character names:

U+30B9 KATAKANA LETTER SU character (ス)

As raw characters:

ス

As a string of HTML entities:

ス

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 130, hex 0x82, octal \202, binary 10000010
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 185, hex 0xB9, octal \271, binary 10111001
This is continuation byte 2, expecting 0 more.

U+30B9	KATAKANA LETTER SU