243511144340 has 12 divisors (see below), whose sum is σ = 511373403156. Its totient is φ = 97404457728.

The previous prime is 243511144333. The next prime is 243511144441. The reversal of 243511144340 is 43441115342.

243511144340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 84990907024 + 158520237316 = 291532^2 + 398146^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243511144297 and 243511144306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6087778589 + ... + 6087778628.

It is an arithmetic number, because the mean of its divisors is an integer number (42614450263).

Almost surely, 2^243511144340 is an apocalyptic number.

243511144340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243511144340 is an abundant number, since it is smaller than the sum of its proper divisors (267862258816).

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

243511144340 is a wasteful number, since it uses less digits than its factorization.

243511144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12175557226 (or 12175557224 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 243511144340 its reverse (43441115342), we get a palindrome (286952259682).

The spelling of 243511144340 in words is "two hundred forty-three billion, five hundred eleven million, one hundred forty-four thousand, three hundred forty".