243113133021 has 16 divisors (see below), whose sum is σ = 353732992320. Its totient is φ = 147293838720.

The previous prime is 243113133019. The next prime is 243113133041. The reversal of 243113133021 is 120331311342.

243113133021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243113133021 - 2¹ = 243113133019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243113132982 and 243113133000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243113133041) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1082200 + ... + 1287393.

It is an arithmetic number, because the mean of its divisors is an integer number (22108312020).

Almost surely, 2^243113133021 is an apocalyptic number.

It is an amenable number.

243113133021 is a deficient number, since it is larger than the sum of its proper divisors (110619859299).

243113133021 is a wasteful number, since it uses less digits than its factorization.

243113133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372716.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 243113133021 its reverse (120331311342), we get a palindrome (363444444363).

The spelling of 243113133021 in words is "two hundred forty-three billion, one hundred thirteen million, one hundred thirty-three thousand, twenty-one".