1143311142 has 16 divisors (see below), whose sum is σ = 2286959472. Its totient is φ = 381047520.

The previous prime is 1143311123. The next prime is 1143311153. The reversal of 1143311142 is 2411133411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60292 + ... + 76952.

It is an arithmetic number, because the mean of its divisors is an integer number (142934967).

Almost surely, 2^1143311142 is an apocalyptic number.

1143311142 is an abundant number, since it is smaller than the sum of its proper divisors (1143648330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143311142 is a wasteful number, since it uses less digits than its factorization.

1143311142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28103.

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

The square root of 1143311142 is about 33812.8842602934. The cubic root of 1143311142 is about 1045.6543422926.

Adding to 1143311142 its reverse (2411133411), we get a palindrome (3554444553).

The spelling of 1143311142 in words is "one billion, one hundred forty-three million, three hundred eleven thousand, one hundred forty-two".