1143331407 has 6 divisors (see below), whose sum is σ = 1651478712. Its totient is φ = 762220932.

The previous prime is 1143331393. The next prime is 1143331439. The reversal of 1143331407 is 7041333411.

It is not a de Polignac number, because 1143331407 - 2⁸ = 1143331151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143331907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63518403 + ... + 63518420.

It is an arithmetic number, because the mean of its divisors is an integer number (275246452).

Almost surely, 2^1143331407 is an apocalyptic number.

1143331407 is a deficient number, since it is larger than the sum of its proper divisors (508147305).

1143331407 is a wasteful number, since it uses less digits than its factorization.

1143331407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127036829 (or 127036826 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1143331407 is about 33813.1839228429. The cubic root of 1143331407 is about 1045.6605202726.

Adding to 1143331407 its reverse (7041333411), we get a palindrome (8184664818).

The spelling of 1143331407 in words is "one billion, one hundred forty-three million, three hundred thirty-one thousand, four hundred seven".