1143142312 has 16 divisors (see below), whose sum is σ = 2308268340. Its totient is φ = 527604096.

The previous prime is 1143142303. The next prime is 1143142327. The reversal of 1143142312 is 2132413411.

It can be written as a sum of positive squares in 2 ways, for example, as 1007046756 + 136095556 = 31734^2 + 11666^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5495773 + ... + 5495980.

Almost surely, 2^1143142312 is an apocalyptic number.

It is an amenable number.

1143142312 is an abundant number, since it is smaller than the sum of its proper divisors (1165126028).

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

1143142312 is a wasteful number, since it uses less digits than its factorization.

1143142312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10991772 (or 10991768 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 1143142312 is about 33810.3876345717. The cubic root of 1143142312 is about 1045.6028700070.

Adding to 1143142312 its reverse (2132413411), we get a palindrome (3275555723).

The spelling of 1143142312 in words is "one billion, one hundred forty-three million, one hundred forty-two thousand, three hundred twelve".