1123223131223 has 4 divisors (see below), whose sum is σ = 1159456135488. Its totient is φ = 1086990126960.

The previous prime is 1123223131211. The next prime is 1123223131229. The reversal of 1123223131223 is 3221313223211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123223131223 - 2¹² = 1123223127127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123223131192 and 1123223131201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123223131229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18116502086 + ... + 18116502147.

It is an arithmetic number, because the mean of its divisors is an integer number (289864033872).

Almost surely, 2^{1123223131223} is an apocalyptic number.

1123223131223 is a deficient number, since it is larger than the sum of its proper divisors (36233004265).

1123223131223 is an equidigital number, since it uses as much as digits as its factorization.

1123223131223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36233004264.

The product of its digits is 2592, while the sum is 26.

Adding to 1123223131223 its reverse (3221313223211), we get a palindrome (4344536354434).

The spelling of 1123223131223 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-three million, one hundred thirty-one thousand, two hundred twenty-three".