1131540504 has 32 divisors (see below), whose sum is σ = 2835440640. Its totient is φ = 376301600.

The previous prime is 1131540503. The next prime is 1131540523. The reversal of 1131540504 is 4050451311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131540503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 44352 + ... + 65039.

It is an arithmetic number, because the mean of its divisors is an integer number (88607520).

Almost surely, 2^1131540504 is an apocalyptic number.

It is an amenable number.

1131540504 is an abundant number, since it is smaller than the sum of its proper divisors (1703900136).

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

1131540504 is a wasteful number, since it uses less digits than its factorization.

1131540504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109831 (or 109827 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1131540504 is about 33638.3784389200. The cubic root of 1131540504 is about 1042.0535435687.

Adding to 1131540504 its reverse (4050451311), we get a palindrome (5181991815).

The spelling of 1131540504 in words is "one billion, one hundred thirty-one million, five hundred forty thousand, five hundred four".