243113143021 has 16 divisors (see below), whose sum is σ = 282430851840. Its totient is φ = 204943034880.

The previous prime is 243113142977. The next prime is 243113143033. The reversal of 243113143021 is 120341311342.

It is a cyclic number.

It is not a de Polignac number, because 243113143021 - 2³⁵ = 208753404653 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 (243113143081) 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, 4386360 + ... + 4441438.

It is an arithmetic number, because the mean of its divisors is an integer number (17651928240).

Almost surely, 2^243113143021 is an apocalyptic number.

It is an amenable number.

243113143021 is a deficient number, since it is larger than the sum of its proper divisors (39317708819).

243113143021 is a wasteful number, since it uses less digits than its factorization.

243113143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65484.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 243113143021 its reverse (120341311342), we get a palindrome (363454454363).

The spelling of 243113143021 in words is "two hundred forty-three billion, one hundred thirteen million, one hundred forty-three thousand, twenty-one".