Numberblocks Wiki
Numberblocks Wiki

Twenty-Three, or 23, is a Numberblock made up of 23 blocks. He is voiced by Marcel McCalla.


Twenty-Three has 20 light orange blocks and 3 yellow blocks. He has purple eyebrows, blue eyes, pink lips, and orange-ish limbs.


Not much is known about Twenty-Three, aside from the fact that he is reluctant to rearrange for Season 7. Even though he's prime, he's happy being his own number. His quote is "I am happy being me!".




  • Twenty-Three is the first prime number greater than 20 to be figured out, proving Prime Compounds CAN be figured out (except for all prime numbers less than 20 which was probably figured-out off screen?[clarify]).
  • Twenty-Three is the 9th prime number, and the only prime Numberblock to be figured-out in Season 7.
  • As of Season 8, Twenty-Three is the only Numberblock which has only been seen as their "X tens and Y" form. (meaning a multiple of ten arranged in columns of ten blocks on the left, then the units digit on the right)
    • Twenty-Three has been seen in different arrangements, but only in apps.