This character is a Other Letter and is mainly used in the Cuneiform script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+1230D forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The Winkelhaken (German:[ΛvΙͺΕkΙlΛhaΛkΙn], "angular hook"), also simply called a hook, is one of five basic wedge elements appearing in the composition of signs in Akkadian cuneiform. It was realized by pressing the point of the stylus into the clay.
A single Winkelhaken corresponds to the sign U (Borger 1981 nr. 411, Borger 2003 nr. 661), encoded in Unicode at code point U+1230B π.
other signs consisting of Winkelhaken:
A Glossenkeil (Borger nr. 378) is a cuneiform character, consisting of either two Winkelhaken (U+12471 π±), or of two parallel short diagonal wedges (U+12472 π², similar to GAM), Borger 2003 nr. 592, which serves as a sort of punctuation, as it were as quote sign, marking foreign words or names, or as separation mark, transliterated as a colon ':'.
two Winkelhaken, MAN, XX "20", Borger 2003 nr. 708
three Winkelhaken, EΕ , XXX "30", Borger 2003 nr. 711, U+1230D π
four Winkelhaken, NIMIN, XL "40", Borger 2003 nr. 712, U+1240F π
four Winkelhaken, two of them reversed MAΕ GI, BARGI, Borger 2003 nr. 713, U+12310 π
five Winkelhaken, NINNU, L "50", Borger 2003 nr. 714, U+12410 π
six Winkelhaken, LX "60", Borger 2003 nr. 715, U+12411 π
seven Winkelhaken, Borger 2003 nr. 716, U+12412 π
eight Winkelhaken, Borger 2003 nr. 717, U+12413 π
nine Winkelhaken, Borger 2003 nr. 718, U+12414 π