1123232321 has 8 divisors (see below), whose sum is σ = 1162583400. Its totient is φ = 1083922560.

The previous prime is 1123232293. The next prime is 1123232333. The reversal of 1123232321 is 1232323211.

It can be written as a sum of positive squares in 4 ways, for example, as 365001025 + 758231296 = 19105^2 + 27536^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123232321 - 2¹⁰ = 1123231297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123232293 and 1123232302.

It is not an unprimeable number, because it can be changed into a prime (1123232521) 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 in 7 ways as a sum of consecutive naturals, for example, 51311 + ... + 69851.

It is an arithmetic number, because the mean of its divisors is an integer number (145322925).

Almost surely, 2^1123232321 is an apocalyptic number.

It is an amenable number.

1123232321 is a deficient number, since it is larger than the sum of its proper divisors (39351079).

1123232321 is a wasteful number, since it uses less digits than its factorization.

1123232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20659.

The product of its digits is 432, while the sum is 20.

The square root of 1123232321 is about 33514.6583005108. The cubic root of 1123232321 is about 1039.4968970094.

Adding to 1123232321 its reverse (1232323211), we get a palindrome (2355555532).

The spelling of 1123232321 in words is "one billion, one hundred twenty-three million, two hundred thirty-two thousand, three hundred twenty-one".