From Simple English Wikipedia, the free encyclopedia
This article is about the number 23. For the year, see
23
.
Twenty-three
is a
natural number
. It comes between
twenty-two
and
twenty-four
, and is an
odd number
. It is also the 9th
prime number
, after
2
,
3
,
5
,
7
,
11
,
13
,
17
, and
19
.