1131213232 has 40 divisors (see below), whose sum is σ = 2294469216. Its totient is φ = 539252736.

The previous prime is 1131213217. The next prime is 1131213253. The reversal of 1131213232 is 2323121311.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111808 + ... + 121504.

Almost surely, 2^1131213232 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 1131213232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1147234608).

1131213232 is an abundant number, since it is smaller than the sum of its proper divisors (1163255984).

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

1131213232 is a wasteful number, since it uses less digits than its factorization.

1131213232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045 (or 10039 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1131213232 is about 33633.5135244595. The cubic root of 1131213232 is about 1041.9530705615.

Adding to 1131213232 its reverse (2323121311), we get a palindrome (3454334543).

The spelling of 1131213232 in words is "one billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred thirty-two".