Adding to 31321223002213 its reverse (31220032212313), we get a palindrome (62541255214526).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-31321223002213 is a prime.
It is a Duffinian number.
It is a congruent number.
Almost surely, 231321223002213 is an apocalyptic number.
It is an amenable number.
31321223002213 is a wasteful number, since it uses less digits than its factorization.
31321223002213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10737480806.
The spelling of 31321223002213 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, two thousand, two hundred thirteen".