11031321203 has 16 divisors (see below), whose sum is σ = 13167567360. Its totient is φ = 9035923776.

The previous prime is 11031321163. The next prime is 11031321211. The reversal of 11031321203 is 30212313011.

It is a cyclic number.

It is not a de Polignac number, because 11031321203 - 2¹² = 11031317107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031321293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145388 + ... + 207846.

It is an arithmetic number, because the mean of its divisors is an integer number (822972960).

Almost surely, 2^11031321203 is an apocalyptic number.

11031321203 is a deficient number, since it is larger than the sum of its proper divisors (2136246157).

11031321203 is a wasteful number, since it uses less digits than its factorization.

11031321203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63586.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11031321203 its reverse (30212313011), we get a palindrome (41243634214).

The spelling of 11031321203 in words is "eleven billion, thirty-one million, three hundred twenty-one thousand, two hundred three".