Given that numerals in Greek act as nouns and/or adjectives, they are further coded for Gender, Number and Case. When they function as adjectives, they must agree in these three features with the noun they refer to.
Not all values of these three features are applicable to numerals, as shown in the following tables. In fact, the values masc-fem for Gender and invariant for Number are not used at all.
| Attribute | Value | Gr. example | Gr. tag |
| Gender | masculine | prwtos | NmOdMa |
| feminine | prwty | NmOdFe | |
| neuter | prwto | NmOdNe | |
| common | dhwdheka | NmCdCo | |
| Attribute | Value | Gr. example | Gr. tag |
| Number | singular | prwtos | NmOdMaSg |
| plural | prwtoi | NmOdMaPl | |
| Attribute | Value | Gr. example | Gr. tag |
| Case | nom | prwtos | NmOdMaSgNm |
| gen | prwtou | NmOdMaSgGe | |
| acc | prwto | NmOdMaSgAc | |
| l-spec | voc | prwte | NmOdMaSgVo |
| l-spec | indcl | dhuo | NoCdCoPlIc |