1143132320 has 48 divisors (see below), whose sum is σ = 2946168288. Its totient is φ = 415683840.

The previous prime is 1143132317. The next prime is 1143132323. The reversal of 1143132320 is 232313411.

It is an interprime number because it is at equal distance from previous prime (1143132317) and next prime (1143132323).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1143132292 and 1143132301.

It is not an unprimeable number, because it can be changed into a prime (1143132323) 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, 322994 + ... + 326513.

It is an arithmetic number, because the mean of its divisors is an integer number (61378506).

Almost surely, 2^1143132320 is an apocalyptic number.

1143132320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143132320 is an abundant number, since it is smaller than the sum of its proper divisors (1803035968).

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

1143132320 is a wasteful number, since it uses less digits than its factorization.

1143132320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649533 (or 649525 counting only the distinct ones).

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

The square root of 1143132320 is about 33810.2398690101. The cubic root of 1143132320 is about 1045.5998235230.

Adding to 1143132320 its reverse (232313411), we get a palindrome (1375445731).

The spelling of 1143132320 in words is "one billion, one hundred forty-three million, one hundred thirty-two thousand, three hundred twenty".