1143530320 has 40 divisors (see below), whose sum is σ = 2750393160. Its totient is φ = 441638400.

The previous prime is 1143530317. The next prime is 1143530321. The reversal of 1143530320 is 230353411.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 1143521856 = 92^2 + 33816^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1143530291 and 1143530300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143530321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244131 + ... + 248770.

It is an arithmetic number, because the mean of its divisors is an integer number (68759829).

Almost surely, 2^1143530320 is an apocalyptic number.

1143530320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143530320 is an abundant number, since it is smaller than the sum of its proper divisors (1606862840).

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

1143530320 is a wasteful number, since it uses less digits than its factorization.

1143530320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492943 (or 492937 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1143530320 is about 33816.1251476274. The cubic root of 1143530320 is about 1045.7211569375.

Adding to 1143530320 its reverse (230353411), we get a palindrome (1373883731).

The spelling of 1143530320 in words is "one billion, one hundred forty-three million, five hundred thirty thousand, three hundred twenty".