Pavanan was a renowned Malayalam journalist and writer. He won the Sahitya Akademi Writer in 1965 and the Soviet Land NEhru Award in 1979. He has authored more than a dozen books during his lifetime and explored all the major forms of writing: short story, essay, socio-political commentaryliterary criticism, writings on science and philosophy. He was an avowed rationalist and stayed one till the end of his life.