1143142311 has 8 divisors (see below), whose sum is σ = 1538434944. Its totient is φ = 754972280.

The previous prime is 1143142303. The next prime is 1143142327. The reversal of 1143142311 is 1132413411.

1143142311 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 1143142311 - 2³ = 1143142303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143142331) 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, 1780275 + ... + 1780916.

It is an arithmetic number, because the mean of its divisors is an integer number (192304368).

Almost surely, 2^1143142311 is an apocalyptic number.

1143142311 is a deficient number, since it is larger than the sum of its proper divisors (395292633).

1143142311 is a wasteful number, since it uses less digits than its factorization.

1143142311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561301.

The product of its digits is 288, while the sum is 21.

The square root of 1143142311 is about 33810.3876197834. The cubic root of 1143142311 is about 1045.6028697021.

Adding to 1143142311 its reverse (1132413411), we get a palindrome (2275555722).

The spelling of 1143142311 in words is "one billion, one hundred forty-three million, one hundred forty-two thousand, three hundred eleven".