Is the word literatura the same in Brazilian and European Portuguese?

Yes

The spelling, meaning, and grammatical gender of "literatura" are identical in both Brazilian and Continental Portuguese. The only difference lies in pronunciation.

In Brazilian Portuguese, the vowels are generally more "open" and clearly articulated. In Continental Portuguese, there is a significant phenomenon of vowel reduction, where unstressed vowels (like the "e" and the unstressed "a"s in "literatura") are often shortened, neutralized, or even swallowed entirely, making the word sound more "closed" or consonant-heavy.

Brazilian Portuguese Examples

1. Eu amo ler literatura clássica. (I love reading classical literature.)
2. Ele está estudando literatura comparada na faculdade. (He is studying comparative literature at university.)
3. A literatura brasileira é muito rica e diversa. (Brazilian literature is very rich and diverse.)
4. Nós estamos lendo muita literatura de ficção científica. (We are reading a lot of science fiction literature.)
5. Você já leu esta obra da literatura nacional? (Have you already read this work of national literature?)

Continental Portuguese Examples

1. Eu adoro ler literatura clássica. (I love reading classical literature.)
2. Ele está a estudar literatura comparada na universidade. (He is studying comparative literature at university.)
3. A literatura portuguesa é muito rica e diversa. (Portuguese literature is very rich and diverse.)
4. Nós estamos a ler muita literatura de ficção científica. (We are reading a lot of science fiction literature.)
5. Já leste esta obra da literatura nacional? (Have you read this work of national literature?)