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-213437306011003 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 213437306011003.
Almost surely, 2213437306011003 is an apocalyptic number.
213437306011003 is a wasteful number, since it uses less digits than its factorization.
213437306011003 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 103963619204.
Adding to 213437306011003 its reverse (300110603734312), we get a palindrome (513547909745315).
The spelling of 213437306011003 in words is "two hundred thirteen trillion, four hundred thirty-seven billion, three hundred six million, eleven thousand, three".