1143431332 has 6 divisors (see below), whose sum is σ = 2001004838. Its totient is φ = 571715664.

The previous prime is 1143431321. The next prime is 1143431351. The reversal of 1143431332 is 2331343411.

It can be written as a sum of positive squares in only one way, i.e., 1091245156 + 52186176 = 33034^2 + 7224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1143431297 and 1143431306.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 142928913 + ... + 142928920.

Almost surely, 2^1143431332 is an apocalyptic number.

It is an amenable number.

1143431332 is a deficient number, since it is larger than the sum of its proper divisors (857573506).

1143431332 is a wasteful number, since it uses less digits than its factorization.

1143431332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285857837 (or 285857835 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 1143431332 is about 33814.6614946830. The cubic root of 1143431332 is about 1045.6909823016.

Adding to 1143431332 its reverse (2331343411), we get a palindrome (3474774743).

The spelling of 1143431332 in words is "one billion, one hundred forty-three million, four hundred thirty-one thousand, three hundred thirty-two".