1143230388 has 48 divisors (see below), whose sum is σ = 2736222720. Its totient is φ = 371289600.

The previous prime is 1143230383. The next prime is 1143230441. The reversal of 1143230388 is 8830323411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143230383) 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 15 ways as a sum of consecutive naturals, for example, 649053 + ... + 650811.

It is an arithmetic number, because the mean of its divisors is an integer number (57004640).

Almost surely, 2^1143230388 is an apocalyptic number.

It is an amenable number.

1143230388 is an abundant number, since it is smaller than the sum of its proper divisors (1592992332).

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

1143230388 is a wasteful number, since it uses less digits than its factorization.

1143230388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128 (or 3126 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1143230388 is about 33811.6901086000. The cubic root of 1143230388 is about 1045.6297229346.

Adding to 1143230388 its reverse (8830323411), we get a palindrome (9973553799).

The spelling of 1143230388 in words is "one billion, one hundred forty-three million, two hundred thirty thousand, three hundred eighty-eight".