1131423312 has 40 divisors (see below), whose sum is σ = 2924285056. Its totient is φ = 376955136.

The previous prime is 1131423299. The next prime is 1131423317. The reversal of 1131423312 is 2133241311.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131423317) 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 in 7 ways as a sum of consecutive naturals, for example, 121113 + ... + 130119.

Almost surely, 2^1131423312 is an apocalyptic number.

1131423312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131423312 is an abundant number, since it is smaller than the sum of its proper divisors (1792861744).

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

1131423312 is a wasteful number, since it uses less digits than its factorization.

1131423312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11635 (or 11629 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 1131423312 is about 33636.6364549133. The cubic root of 1131423312 is about 1042.0175676713.

Adding to 1131423312 its reverse (2133241311), we get a palindrome (3264664623).

The spelling of 1131423312 in words is "one billion, one hundred thirty-one million, four hundred twenty-three thousand, three hundred twelve".