234 = 2 x 32 x 13.
234 has a representation as a sum of two squares: 234 = 32 + 152.
234 is a triangular matchstick number.
234 is a solution to the postage stamp problem with four denominations and eight stamps.
There are 234 ways to stack 12 pennies in a line so that each penny lies on the table or on two pennies.
234 is the atomic mass number of the rare, but naturally occurring, radioactive isotope uranium-234.