1123321312 has 12 divisors (see below), whose sum is σ = 2211538896. Its totient is φ = 561660640.

The previous prime is 1123321279. The next prime is 1123321319. The reversal of 1123321312 is 2131233211.

It is a self number, because there is not a number n which added to its sum of digits gives 1123321312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123321319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17551864 + ... + 17551927.

It is an arithmetic number, because the mean of its divisors is an integer number (184294908).

Almost surely, 2^1123321312 is an apocalyptic number.

It is an amenable number.

1123321312 is a deficient number, since it is larger than the sum of its proper divisors (1088217584).

1123321312 is an equidigital number, since it uses as much as digits as its factorization.

1123321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35103801 (or 35103793 counting only the distinct ones).

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

The square root of 1123321312 is about 33515.9859171709. The cubic root of 1123321312 is about 1039.5243485655.

Adding to 1123321312 its reverse (2131233211), we get a palindrome (3254554523).

The spelling of 1123321312 in words is "one billion, one hundred twenty-three million, three hundred twenty-one thousand, three hundred twelve".