1131232 has 48 divisors (see below), whose sum is σ = 2449440. Its totient is φ = 512512.

The previous prime is 1131223. The next prime is 1131239. The reversal of 1131232 is 2321311.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21318 + ... + 21370.

It is an arithmetic number, because the mean of its divisors is an integer number (51030).

2^1131232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224720).

1131232 is an abundant number, since it is smaller than the sum of its proper divisors (1318208).

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

1131232 is a wasteful number, since it uses less digits than its factorization.

1131232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 107 counting only the distinct ones).

The product of its digits is 36, while the sum is 13.

The square root of 1131232 is about 1063.5939074666. The cubic root of 1131232 is about 104.1958832890.

Adding to 1131232 its reverse (2321311), we get a palindrome (3452543).

The spelling of 1131232 in words is "one million, one hundred thirty-one thousand, two hundred thirty-two".