243340421312 has 28 divisors (see below), whose sum is σ = 491989573296. Its totient is φ = 119374544640.

The previous prime is 243340421309. The next prime is 243340421353. The reversal of 243340421312 is 213124043342.

It is an unprimeable number.

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, 35866364 + ... + 35873147.

Almost surely, 2^243340421312 is an apocalyptic number.

It is an amenable number.

243340421312 is an abundant number, since it is smaller than the sum of its proper divisors (248649151984).

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

243340421312 is an equidigital number, since it uses as much as digits as its factorization.

243340421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71739576 (or 71739566 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 243340421312 its reverse (213124043342), we get a palindrome (456464464654).

The spelling of 243340421312 in words is "two hundred forty-three billion, three hundred forty million, four hundred twenty-one thousand, three hundred twelve".