1131288568 has 32 divisors (see below), whose sum is σ = 2169907200. Its totient is φ = 552781152.

The previous prime is 1131288563. The next prime is 1131288569. The reversal of 1131288568 is 8658821311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131288563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59763 + ... + 76381.

It is an arithmetic number, because the mean of its divisors is an integer number (67809600).

Almost surely, 2^1131288568 is an apocalyptic number.

It is an amenable number.

1131288568 is a deficient number, since it is larger than the sum of its proper divisors (1038618632).

1131288568 is a wasteful number, since it uses less digits than its factorization.

1131288568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16819 (or 16815 counting only the distinct ones).

The product of its digits is 92160, while the sum is 43.

The square root of 1131288568 is about 33634.6334601702. The cubic root of 1131288568 is about 1041.9762005462.

The spelling of 1131288568 in words is "one billion, one hundred thirty-one million, two hundred eighty-eight thousand, five hundred sixty-eight".