1131265288 has 16 divisors (see below), whose sum is σ = 2124027180. Its totient is φ = 564858048.

The previous prime is 1131265279. The next prime is 1131265309. The reversal of 1131265288 is 8825621311.

It can be written as a sum of positive squares in 2 ways, for example, as 684450244 + 446815044 = 26162^2 + 21138^2 .

It is a super-2 number, since 2×1131265288² = 2559522303667445888, which contains 22 as substring.

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, 90595 + ... + 102322.

Almost surely, 2^1131265288 is an apocalyptic number.

It is an amenable number.

1131265288 is a deficient number, since it is larger than the sum of its proper divisors (992761892).

1131265288 is a wasteful number, since it uses less digits than its factorization.

1131265288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193656 (or 193652 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 1131265288 is about 33634.2873865346. The cubic root of 1131265288 is about 1041.9690531295.

Adding to 1131265288 its reverse (8825621311), we get a palindrome (9956886599).

The spelling of 1131265288 in words is "one billion, one hundred thirty-one million, two hundred sixty-five thousand, two hundred eighty-eight".