1143312212 has 12 divisors (see below), whose sum is σ = 2286624480. Its totient is φ = 489990936.

The previous prime is 1143312199. The next prime is 1143312217. The reversal of 1143312212 is 2122133411.

1143312212 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143312217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20416262 + ... + 20416317.

It is an arithmetic number, because the mean of its divisors is an integer number (190552040).

Almost surely, 2^1143312212 is an apocalyptic number.

It is an amenable number.

1143312212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1143312212 is a wasteful number, since it uses less digits than its factorization.

1143312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40832590 (or 40832588 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 1143312212 is about 33812.9000826608. The cubic root of 1143312212 is about 1045.6546684942.

Adding to 1143312212 its reverse (2122133411), we get a palindrome (3265445623).

The spelling of 1143312212 in words is "one billion, one hundred forty-three million, three hundred twelve thousand, two hundred twelve".