1143011020 has 12 divisors (see below), whose sum is σ = 2400323184. Its totient is φ = 457204400.

The previous prime is 1143010991. The next prime is 1143011033. The reversal of 1143011020 is 201103411.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28575256 + ... + 28575295.

It is an arithmetic number, because the mean of its divisors is an integer number (200026932).

Almost surely, 2^1143011020 is an apocalyptic number.

1143011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143011020 is an abundant number, since it is smaller than the sum of its proper divisors (1257312164).

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

1143011020 is a wasteful number, since it uses less digits than its factorization.

1143011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57150560 (or 57150558 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1143011020 is about 33808.4459861733. The cubic root of 1143011020 is about 1045.5628386692.

Adding to 1143011020 its reverse (201103411), we get a palindrome (1344114431).

The spelling of 1143011020 in words is "one billion, one hundred forty-three million, eleven thousand, twenty".