11231230231 has 16 divisors (see below), whose sum is σ = 12427732800. Its totient is φ = 10082492928.

The previous prime is 11231230223. The next prime is 11231230247. The reversal of 11231230231 is 13203213211.

It is a cyclic number.

It is not a de Polignac number, because 11231230231 - 2³ = 11231230223 is a prime.

It is a super-2 number, since 2×11231230231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11231230199 and 11231230208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231230331) 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, 1482030 + ... + 1489588.

It is an arithmetic number, because the mean of its divisors is an integer number (776733300).

Almost surely, 2^11231230231 is an apocalyptic number.

11231230231 is a deficient number, since it is larger than the sum of its proper divisors (1196502569).

11231230231 is a wasteful number, since it uses less digits than its factorization.

11231230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10698.

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

Adding to 11231230231 its reverse (13203213211), we get a palindrome (24434443442).

The spelling of 11231230231 in words is "eleven billion, two hundred thirty-one million, two hundred thirty thousand, two hundred thirty-one".