1131423224 has 32 divisors (see below), whose sum is σ = 2211747120. Its totient is φ = 542121216.

The previous prime is 1131423221. The next prime is 1131423239. The reversal of 1131423224 is 4223241311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131423224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131423221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12797 + ... + 49260.

Almost surely, 2^1131423224 is an apocalyptic number.

It is an amenable number.

1131423224 is a deficient number, since it is larger than the sum of its proper divisors (1080323896).

1131423224 is a wasteful number, since it uses less digits than its factorization.

1131423224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62159 (or 62155 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1131423224 is about 33636.6351468157. The cubic root of 1131423224 is about 1042.0175406559.

Adding to 1131423224 its reverse (4223241311), we get a palindrome (5354664535).

The spelling of 1131423224 in words is "one billion, one hundred thirty-one million, four hundred twenty-three thousand, two hundred twenty-four".