Adding to 11311010223431 its reverse (13432201011311), we get a palindrome (24743211234742).
11311010223431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a Duffinian number.
It is a congruent number.
Almost surely, 211311010223431 is an apocalyptic number.
11311010223431 is an equidigital number, since it uses as much as digits as its factorization.
11311010223431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 595316327568.
The spelling of 11311010223431 in words is "eleven trillion, three hundred eleven billion, ten million, two hundred twenty-three thousand, four hundred thirty-one".