1131040328 has 32 divisors (see below), whose sum is σ = 2449582560. Its totient is φ = 483866880.

The previous prime is 1131040327. The next prime is 1131040343. The reversal of 1131040328 is 8230401311.

It is not an unprimeable number, because it can be changed into a prime (1131040321) 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, 376526 + ... + 379517.

It is an arithmetic number, because the mean of its divisors is an integer number (76549455).

Almost surely, 2^1131040328 is an apocalyptic number.

It is an amenable number.

1131040328 is an abundant number, since it is smaller than the sum of its proper divisors (1318542232).

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

1131040328 is a wasteful number, since it uses less digits than its factorization.

1131040328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756077 (or 756073 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1131040328 is about 33630.9430138377. The cubic root of 1131040328 is about 1041.8999809440.

Adding to 1131040328 its reverse (8230401311), we get a palindrome (9361441639).

The spelling of 1131040328 in words is "one billion, one hundred thirty-one million, forty thousand, three hundred twenty-eight".