The last digit of the build number has the following meaning:
XXXX9 -> Private Beta
XXXX8 -> Public Beta
XXXX7 -> PlayStore Beta

XXXX1 -> Stable
XXXX0 -> PlayStore/AppGallery Stable

New Version: appcenter 7.1.3.1 (17168)

New Version: appcenterbeta 7.1.3.1 (17169)

New Version: appgallery 7.0.1.0 (17090)

New Version: appgallery 7.1.3.1 (17170)

New Version: appcenter 7.1.3.1 (17178)

New Version: appcenterbeta 7.1.3.1 (17179)

New Version: appcenterbeta 7.1.3.1 (17189)

New Version: appcenter 7.1.3.1 (17198)

New Version: appcenterbeta 7.1.3.1 (17199)