1243244312 has 64 divisors (see below), whose sum is σ = 2444752800. Its totient is φ = 592220160.

The previous prime is 1243244311. The next prime is 1243244339. The reversal of 1243244312 is 2134423421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243244311) 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 15 ways as a sum of consecutive naturals, for example, 3280139 + ... + 3280517.

Almost surely, 2^1243244312 is an apocalyptic number.

It is an amenable number.

1243244312 is a deficient number, since it is larger than the sum of its proper divisors (1201508488).

1243244312 is a wasteful number, since it uses less digits than its factorization.

1243244312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 632 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 1243244312 is about 35259.6697658954. The cubic root of 1243244312 is about 1075.2732132678.

Adding to 1243244312 its reverse (2134423421), we get a palindrome (3377667733).

The spelling of 1243244312 in words is "one billion, two hundred forty-three million, two hundred forty-four thousand, three hundred twelve".