11031321223 has 16 divisors (see below), whose sum is σ = 12311601120. Its totient is φ = 9813976704.

The previous prime is 11031321221. The next prime is 11031321227. The reversal of 11031321223 is 32212313011.

It is a cyclic number.

It is not a de Polignac number, because 11031321223 - 2¹ = 11031321221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11031321223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031321221) 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, 186265 + ... + 238237.

It is an arithmetic number, because the mean of its divisors is an integer number (769475070).

Almost surely, 2^11031321223 is an apocalyptic number.

11031321223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11031321223 is a deficient number, since it is larger than the sum of its proper divisors (1280279897).

11031321223 is a wasteful number, since it uses less digits than its factorization.

11031321223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52578.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11031321223 its reverse (32212313011), we get a palindrome (43243634234).

The spelling of 11031321223 in words is "eleven billion, thirty-one million, three hundred twenty-one thousand, two hundred twenty-three".