11133312231 has 8 divisors (see below), whose sum is σ = 14975783280. Its totient is φ = 7356524672.

The previous prime is 11133312187. The next prime is 11133312283. The reversal of 11133312231 is 13221333111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11133312231 - 2⁶ = 11133312167 is a prime.

It is a super-2 number, since 2×11133312231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11133312198 and 11133312207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133312431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16420476 + ... + 16421153.

It is an arithmetic number, because the mean of its divisors is an integer number (1871972910).

Almost surely, 2^11133312231 is an apocalyptic number.

11133312231 is a deficient number, since it is larger than the sum of its proper divisors (3842471049).

11133312231 is a wasteful number, since it uses less digits than its factorization.

11133312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32841745.

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

Adding to 11133312231 its reverse (13221333111), we get a palindrome (24354645342).

The spelling of 11133312231 in words is "eleven billion, one hundred thirty-three million, three hundred twelve thousand, two hundred thirty-one".