11321311203003 has 24 divisors (see below), whose sum is σ = 15375519919120. Its totient is φ = 7407887699520.

The previous prime is 11321311202977. The next prime is 11321311203019. The reversal of 11321311203003 is 30030211312311.

It is a happy number.

It is not a de Polignac number, because 11321311203003 - 2²¹ = 11321309105851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11321311203043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39768453 + ... + 40052121.

Almost surely, 2^{11321311203003} is an apocalyptic number.

11321311203003 is a deficient number, since it is larger than the sum of its proper divisors (4054208716117).

11321311203003 is an frugal number, since it uses more digits than its factorization.

11321311203003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284667 (or 284200 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 11321311203003 its reverse (30030211312311), we get a palindrome (41351522515314).

The spelling of 11321311203003 in words is "eleven trillion, three hundred twenty-one billion, three hundred eleven million, two hundred three thousand, three".