243113340021 has 16 divisors (see below), whose sum is σ = 327517298304. Its totient is φ = 160392720384.

The previous prime is 243113340011. The next prime is 243113340049. The reversal of 243113340021 is 120043311342.

It is a happy number.

It is not a de Polignac number, because 243113340021 - 2⁶ = 243113339957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243113339973 and 243113340000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243113340011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5668560 + ... + 5711286.

It is an arithmetic number, because the mean of its divisors is an integer number (20469831144).

Almost surely, 2^243113340021 is an apocalyptic number.

It is an amenable number.

243113340021 is a deficient number, since it is larger than the sum of its proper divisors (84403958283).

243113340021 is a wasteful number, since it uses less digits than its factorization.

243113340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62380.

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

Adding to 243113340021 its reverse (120043311342), we get a palindrome (363156651363).

The spelling of 243113340021 in words is "two hundred forty-three billion, one hundred thirteen million, three hundred forty thousand, twenty-one".