1131404304 has 160 divisors (see below), whose sum is σ = 3111229440. Its totient is φ = 353880576.

The previous prime is 1131404299. The next prime is 1131404311. The reversal of 1131404304 is 4034041311.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10379802 + ... + 10379910.

It is an arithmetic number, because the mean of its divisors is an integer number (19445184).

Almost surely, 2^1131404304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131404304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555614720).

1131404304 is an abundant number, since it is smaller than the sum of its proper divisors (1979825136).

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

1131404304 is a wasteful number, since it uses less digits than its factorization.

1131404304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1131404304 is about 33636.3539046669. The cubic root of 1131404304 is about 1042.0117323131.

Adding to 1131404304 its reverse (4034041311), we get a palindrome (5165445615).

The spelling of 1131404304 in words is "one billion, one hundred thirty-one million, four hundred four thousand, three hundred four".