Stumbled across an excellent article in which a scientist shares his thought on whether universe is actually made up of mathematics. My personal view (as if it actually matters) is that it is a very intriguing possibility. Imagine if all mathematical objects are actually their own universes. This way, we would have infinite universes and the grand question of why our universe is special would be solved. Our universe is not special in any way. It is just one of the infinite mathematical objects. The numerals 1, 2, etc. would be making their own dull universe. Our universe could be a very, very complex mathematical object. Wow! This is thing is pretty cool.
There is XKCD on that too!
http://xkcd.com/435/