1243341312 has 80 divisors (see below), whose sum is σ = 3332197440. Its totient is φ = 411963392.

The previous prime is 1243341293. The next prime is 1243341347. The reversal of 1243341312 is 2131433421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 263389 + ... + 268067.

It is an arithmetic number, because the mean of its divisors is an integer number (41652468).

Almost surely, 2^1243341312 is an apocalyptic number.

1243341312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243341312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666098720).

1243341312 is an abundant number, since it is smaller than the sum of its proper divisors (2088856128).

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

1243341312 is an equidigital number, since it uses as much as digits as its factorization.

1243341312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873 (or 4857 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1243341312 is about 35261.0452482623. The cubic root of 1243341312 is about 1075.3011774119.

Adding to 1243341312 its reverse (2131433421), we get a palindrome (3374774733).

The spelling of 1243341312 in words is "one billion, two hundred forty-three million, three hundred forty-one thousand, three hundred twelve".