11111223004231 has 16 divisors (see below), whose sum is σ = 13376046726400. Its totient is φ = 9016462963008.

The previous prime is 11111223004159. The next prime is 11111223004237. The reversal of 11111223004231 is 13240032211111.

It is a cyclic number.

It is not a de Polignac number, because 11111223004231 - 2¹¹ = 11111223002183 is a prime.

It is a super-3 number, since 3×11111223004231³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111223004237) 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, 28436190 + ... + 28824283.

It is an arithmetic number, because the mean of its divisors is an integer number (836002920400).

Almost surely, 2^{11111223004231} is an apocalyptic number.

11111223004231 is a deficient number, since it is larger than the sum of its proper divisors (2264823722169).

11111223004231 is a wasteful number, since it uses less digits than its factorization.

11111223004231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57261958.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 11111223004231 its reverse (13240032211111), we get a palindrome (24351255215342).

The spelling of 11111223004231 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-three million, four thousand, two hundred thirty-one".