1143040311 has 12 divisors (see below), whose sum is σ = 1886923792. Its totient is φ = 653165856.

The previous prime is 1143040303. The next prime is 1143040333. The reversal of 1143040311 is 1130403411.

It is not a de Polignac number, because 1143040311 - 2³ = 1143040303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143040391) 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 11 ways as a sum of consecutive naturals, for example, 9071686 + ... + 9071811.

Almost surely, 2^1143040311 is an apocalyptic number.

1143040311 is a deficient number, since it is larger than the sum of its proper divisors (743883481).

1143040311 is a wasteful number, since it uses less digits than its factorization.

1143040311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18143510 (or 18143507 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1143040311 is about 33808.8791739685. The cubic root of 1143040311 is about 1045.5717698516.

Adding to 1143040311 its reverse (1130403411), we get a palindrome (2273443722).

The spelling of 1143040311 in words is "one billion, one hundred forty-three million, forty thousand, three hundred eleven".