Il numero 1731, millesettecentotrentuno in Italiano, in Inglese si dice one thousand seven hundred thirty-one.
Il numero ordinale 1731° in inglese si dice one thousand seven hundred thirty-first.
1722: one thousand seven hundred twenty-two
1723: one thousand seven hundred twenty-three
1724: one thousand seven hundred twenty-four
1725: one thousand seven hundred twenty-five
1726: one thousand seven hundred twenty-six
1727: one thousand seven hundred twenty-seven
1728: one thousand seven hundred twenty-eight
1729: one thousand seven hundred twenty-nine
1730: one thousand seven hundred thirty
1732: one thousand seven hundred thirty-two
1733: one thousand seven hundred thirty-three
1734: one thousand seven hundred thirty-four
1735: one thousand seven hundred thirty-five
1736: one thousand seven hundred thirty-six
1737: one thousand seven hundred thirty-seven
1738: one thousand seven hundred thirty-eight
1739: one thousand seven hundred thirty-nine
1740: one thousand seven hundred forty