1143311412 has 12 divisors (see below), whose sum is σ = 2667726656. Its totient is φ = 381103800.

The previous prime is 1143311369. The next prime is 1143311413. The reversal of 1143311412 is 2141133411.

It is a tau number, because it is divible by the number of its divisors (12).

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 (1143311413) 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 3 ways as a sum of consecutive naturals, for example, 47637964 + ... + 47637987.

Almost surely, 2^1143311412 is an apocalyptic number.

1143311412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143311412 is an abundant number, since it is smaller than the sum of its proper divisors (1524415244).

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

1143311412 is a wasteful number, since it uses less digits than its factorization.

1143311412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95275958 (or 95275956 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 1143311412 is about 33812.8882528541. Note that the first 3 decimals coincide. The cubic root of 1143311412 is about 1045.6544246052.

Adding to 1143311412 its reverse (2141133411), we get a palindrome (3284444823).

The spelling of 1143311412 in words is "one billion, one hundred forty-three million, three hundred eleven thousand, four hundred twelve".