11223312231 has 16 divisors (see below), whose sum is σ = 16037074944. Its totient is φ = 6963463584.

The previous prime is 11223312193. The next prime is 11223312259. The reversal of 11223312231 is 13221332211.

It is not a de Polignac number, because 11223312231 - 2²³ = 11214923623 is a prime.

It is a super-2 number, since 2×11223312231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11223312198 and 11223312207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223312281) 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, 2195511 + ... + 2200616.

It is an arithmetic number, because the mean of its divisors is an integer number (1002317184).

Almost surely, 2^11223312231 is an apocalyptic number.

11223312231 is a deficient number, since it is larger than the sum of its proper divisors (4813762713).

11223312231 is a wasteful number, since it uses less digits than its factorization.

11223312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396190.

The product of its digits is 432, while the sum is 21.

Adding to 11223312231 its reverse (13221332211), we get a palindrome (24444644442).

The spelling of 11223312231 in words is "eleven billion, two hundred twenty-three million, three hundred twelve thousand, two hundred thirty-one".