11223131323 has 4 divisors (see below), whose sum is σ = 11297456848. Its totient is φ = 11148805800.

The previous prime is 11223131237. The next prime is 11223131333. The reversal of 11223131323 is 32313132211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11223131323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11223131294 and 11223131303.

It is not an unprimeable number, because it can be changed into a prime (11223131333) 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, 37162536 + ... + 37162837.

It is an arithmetic number, because the mean of its divisors is an integer number (2824364212).

Almost surely, 2^11223131323 is an apocalyptic number.

11223131323 is a deficient number, since it is larger than the sum of its proper divisors (74325525).

11223131323 is an equidigital number, since it uses as much as digits as its factorization.

11223131323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74325524.

The product of its digits is 648, while the sum is 22.

Adding to 11223131323 its reverse (32313132211), we get a palindrome (43536263534).

The spelling of 11223131323 in words is "eleven billion, two hundred twenty-three million, one hundred thirty-one thousand, three hundred twenty-three".