1243231412 has 12 divisors (see below), whose sum is σ = 2185967616. Its totient is φ = 618669240.

The previous prime is 1243231411. The next prime is 1243231447. The reversal of 1243231412 is 2141323421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243231411) 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, 735668 + ... + 737355.

It is an arithmetic number, because the mean of its divisors is an integer number (182163968).

Almost surely, 2^1243231412 is an apocalyptic number.

It is an amenable number.

1243231412 is a deficient number, since it is larger than the sum of its proper divisors (942736204).

1243231412 is a wasteful number, since it uses less digits than its factorization.

1243231412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473238 (or 1473236 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1243231412 is about 35259.4868368784. The cubic root of 1243231412 is about 1075.2694942154.

Adding to 1243231412 its reverse (2141323421), we get a palindrome (3384554833).

The spelling of 1243231412 in words is "one billion, two hundred forty-three million, two hundred thirty-one thousand, four hundred twelve".