243121113013 has 8 divisors (see below), whose sum is σ = 244220558400. Its totient is φ = 242021917440.

The previous prime is 243121112999. The next prime is 243121113017. The reversal of 243121113013 is 310311121342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243121113013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121113017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2049088 + ... + 2164486.

It is an arithmetic number, because the mean of its divisors is an integer number (30527569800).

Almost surely, 2^243121113013 is an apocalyptic number.

It is an amenable number.

243121113013 is a deficient number, since it is larger than the sum of its proper divisors (1099445387).

243121113013 is a wasteful number, since it uses less digits than its factorization.

243121113013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124907.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 243121113013 its reverse (310311121342), we get a palindrome (553432234355).

The spelling of 243121113013 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred thirteen thousand, thirteen".