11123333203231 has 4 divisors (see below), whose sum is σ = 11382015370792. Its totient is φ = 10864651035672.

The previous prime is 11123333203207. The next prime is 11123333203247. The reversal of 11123333203231 is 13230233332111.

It is a happy number.

11123333203231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11123333203231 - 2¹⁵ = 11123333170463 is a prime.

It is a super-2 number, since 2×11123333203231² (a number of 27 digits) contains 22 as substring.

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 11123333203231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123333203271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129341083716 + ... + 129341083801.

It is an arithmetic number, because the mean of its divisors is an integer number (2845503842698).

Almost surely, 2^{11123333203231} is an apocalyptic number.

11123333203231 is a deficient number, since it is larger than the sum of its proper divisors (258682167561).

11123333203231 is an equidigital number, since it uses as much as digits as its factorization.

11123333203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258682167560.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 11123333203231 its reverse (13230233332111), we get a palindrome (24353566535342).

The spelling of 11123333203231 in words is "eleven trillion, one hundred twenty-three billion, three hundred thirty-three million, two hundred three thousand, two hundred thirty-one".