The World of Numbers is "an amalgamation of randomly gathered numbers, curios, puzzles, palindromes, primes, gems, your much valued contributions and more general information." Choosing "number palindromes" from the drop-down menu will take you to a page with a list of links to webpages on palindromes -- numbers that read the same from left to right as from right to left. Also posted are more examples of square palindromes, circular primes, Palindromic Primes, Palindromic Tetrahedra, and much more. Visitors are invited to make their comments and contributions as well. Also provided are links to websites on integers and other special numbers, such as primes and zero.