1131225044 has 12 divisors (see below), whose sum is σ = 1982513568. Its totient is φ = 564792600.

The previous prime is 1131225041. The next prime is 1131225071. The reversal of 1131225044 is 4405221311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131225041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201872 + ... + 207399.

It is an arithmetic number, because the mean of its divisors is an integer number (165209464).

Almost surely, 2^1131225044 is an apocalyptic number.

It is an amenable number.

1131225044 is a deficient number, since it is larger than the sum of its proper divisors (851288524).

1131225044 is a wasteful number, since it uses less digits than its factorization.

1131225044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409966 (or 409964 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1131225044 is about 33633.6891226639. The cubic root of 1131225044 is about 1041.9566972007.

Adding to 1131225044 its reverse (4405221311), we get a palindrome (5536446355).

The spelling of 1131225044 in words is "one billion, one hundred thirty-one million, two hundred twenty-five thousand, forty-four".