1143041311 has 8 divisors (see below), whose sum is σ = 1204490880. Its totient is φ = 1081720728.

The previous prime is 1143041309. The next prime is 1143041323. The reversal of 1143041311 is 1131403411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143041311 - 2¹ = 1143041309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143041411) 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, 13771 + ... + 49756.

It is an arithmetic number, because the mean of its divisors is an integer number (150561360).

Almost surely, 2^1143041311 is an apocalyptic number.

1143041311 is a deficient number, since it is larger than the sum of its proper divisors (61449569).

1143041311 is an equidigital number, since it uses as much as digits as its factorization.

1143041311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64493.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1143041311 is about 33808.8939629796. The cubic root of 1143041311 is about 1045.5720747610.

Adding to 1143041311 its reverse (1131403411), we get a palindrome (2274444722).

Subtracting from 1143041311 its reverse (1131403411), we obtain a triangular number (11637900 = T₄₈₂₄).

The spelling of 1143041311 in words is "one billion, one hundred forty-three million, forty-one thousand, three hundred eleven".