1123320328 has 32 divisors (see below), whose sum is σ = 2276731800. Its totient is φ = 516515328.

The previous prime is 1123320287. The next prime is 1123320329. The reversal of 1123320328 is 8230233211.

It can be written as a sum of positive squares in 4 ways, for example, as 516289284 + 607031044 = 22722^2 + 24638^2 .

It is not an unprimeable number, because it can be changed into a prime (1123320329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7900 + ... + 48052.

Almost surely, 2^1123320328 is an apocalyptic number.

It is an amenable number.

1123320328 is an abundant number, since it is smaller than the sum of its proper divisors (1153411472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123320328 is a wasteful number, since it uses less digits than its factorization.

1123320328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40441 (or 40437 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1123320328 is about 33515.9712376055. The cubic root of 1123320328 is about 1039.5240450334.

Adding to 1123320328 its reverse (8230233211), we get a palindrome (9353553539).

The spelling of 1123320328 in words is "one billion, one hundred twenty-three million, three hundred twenty thousand, three hundred twenty-eight".