1131440224 has 12 divisors (see below), whose sum is σ = 2227523004. Its totient is φ = 565720096.

The previous prime is 1131440221. The next prime is 1131440243. The reversal of 1131440224 is 4220441311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1131440195 and 1131440204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131440221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17678722 + ... + 17678785.

It is an arithmetic number, because the mean of its divisors is an integer number (185626917).

Almost surely, 2^1131440224 is an apocalyptic number.

It is an amenable number.

1131440224 is a deficient number, since it is larger than the sum of its proper divisors (1096082780).

1131440224 is an equidigital number, since it uses as much as digits as its factorization.

1131440224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35357517 (or 35357509 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1131440224 is about 33636.8878465294. The cubic root of 1131440224 is about 1042.0227595133.

Adding to 1131440224 its reverse (4220441311), we get a palindrome (5351881535).

The spelling of 1131440224 in words is "one billion, one hundred thirty-one million, four hundred forty thousand, two hundred twenty-four".