Il numero romano MDCCXXIII nel sistema decimale vale: 1723.
MDCCXXIII in latino si scrive mille septingenti viginti tres,
mentre in italiano millesettecentoventitré.
MDCCIV, MDCCV, MDCCVI, MDCCVII, MDCCVIII, MDCCIX, MDCCX, MDCCXI, MDCCXII, MDCCXIII, MDCCXIV, MDCCXV, MDCCXVI, MDCCXVII, MDCCXVIII, MDCCXIX, MDCCXX, MDCCXXI, MDCCXXII, MDCCXXIV, MDCCXXV, MDCCXXVI, MDCCXXVII, MDCCXXVIII, MDCCXXIX, MDCCXXX, MDCCXXXI, MDCCXXXII, MDCCXXXIII, MDCCXXXIV, MDCCXXXV, MDCCXXXVI, MDCCXXXVII, MDCCXXXVIII, MDCCXXXIX, MDCCXL, MDCCXLI, MDCCXLII