Today is 131st birthday of #Ramanujan, celebrated as #NationalMathematicsDay in India.
This year is also the 100th anniversary of his election as FRS.
131 is a palindromic and permutable prime with 113 and 311.
Can also be stated as the sum of 3 consecutive primes 41 + 43 + 47. #Ramanujan's letter to Hardy is an all-time classic -
"I beg to introduce myself to you as a clerk"
"I have no University education"
"I have not trodden through the conventional ... but I am striking out a new path"
"I have made a special investigation of divergent series"