1123232320 has 168 divisors, whose sum is σ = 3136977216. Its totient is φ = 375254016.

The previous prime is 1123232293. The next prime is 1123232333. The reversal of 1123232320 is 232323211.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4948047 + ... + 4948273.

Almost surely, 2^1123232320 is an apocalyptic number.

1123232320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568488608).

1123232320 is an abundant number, since it is smaller than the sum of its proper divisors (2013744896).

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

1123232320 is an equidigital number, since it uses as much as digits as its factorization.

1123232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1123232320 is about 33514.6582855920. The cubic root of 1123232320 is about 1039.4968967009.

Adding to 1123232320 its reverse (232323211), we get a palindrome (1355555531).

It can be divided in two parts, 1 and 123232320, that added together give a palindrome (123232321).

The spelling of 1123232320 in words is "one billion, one hundred twenty-three million, two hundred thirty-two thousand, three hundred twenty".