Based on the table "Territory, population and age structure of some countries, 2023", identify the country with the largest land area and its corresponding population.

Analysis:

Based on the provided table, the country with the largest land area is India with an area of 3,287,590 square kilometers.

The population of India is listed as 1438 million people.

Note: The table uses abbreviations and may require clarification for exact numerical values if more precision is needed.

Answer: India, 3,287,590 sq km, 1438 million people.