1131224232 has 16 divisors (see below), whose sum is σ = 2828060640. Its totient is φ = 377074736.

The previous prime is 1131224173. The next prime is 1131224233. The reversal of 1131224232 is 2324221311.

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

It is a junction number, because it is equal to n+sod(n) for n = 1131224199 and 1131224208.

It is not an unprimeable number, because it can be changed into a prime (1131224233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23567148 + ... + 23567195.

It is an arithmetic number, because the mean of its divisors is an integer number (176753790).

Almost surely, 2^1131224232 is an apocalyptic number.

1131224232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131224232 is an abundant number, since it is smaller than the sum of its proper divisors (1696836408).

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

1131224232 is a wasteful number, since it uses less digits than its factorization.

1131224232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47134352 (or 47134348 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1131224232 is about 33633.6770514316. The cubic root of 1131224232 is about 1041.9564478931.

Adding to 1131224232 its reverse (2324221311), we get a palindrome (3455445543).

The spelling of 1131224232 in words is "one billion, one hundred thirty-one million, two hundred twenty-four thousand, two hundred thirty-two".