1131005304 has 96 divisors (see below), whose sum is σ = 3598686000. Its totient is φ = 316362240.

The previous prime is 1131005299. The next prime is 1131005311. The reversal of 1131005304 is 4035001311.

1131005304 is a `hidden beast` number, since 1 + 131 + 0 + 0 + 530 + 4 = 666.

It is a super-2 number, since 2×1131005304² = 2558345995352264832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44629 + ... + 65220.

Almost surely, 2^1131005304 is an apocalyptic number.

It is an amenable number.

1131005304 is an abundant number, since it is smaller than the sum of its proper divisors (2467680696).

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

1131005304 is a wasteful number, since it uses less digits than its factorization.

1131005304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109885 (or 109878 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1131005304 is about 33630.4222988651. The cubic root of 1131005304 is about 1041.8892262784.

Adding to 1131005304 its reverse (4035001311), we get a palindrome (5166006615).

The spelling of 1131005304 in words is "one billion, one hundred thirty-one million, five thousand, three hundred four".