Coordinate transformation in to lat and lon

I have a location coordinate given as 23k 326287 7393293 I want to convert in to latitude and longitude in decimal form.

[KSSV]

Throw some light on present format??

Answer 1

[Chad Greene]

If you know the projection, you can use projinv in the form

 [lat,lon] = projinv(proj,326287 7393293)