243123340329 has 48 divisors (see below), whose sum is σ = 365059094400. Its totient is φ = 155795539200.

The previous prime is 243123340289. The next prime is 243123340331. The reversal of 243123340329 is 923043321342.

243123340329 is a `hidden beast` number, since 2 + 4 + 312 + 334 + 0 + 3 + 2 + 9 = 666.

It is not a de Polignac number, because 243123340329 - 2²⁹ = 242586469417 is a prime.

It is a super-2 number, since 2×243123340329² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243123340293 and 243123340302.

It is not an unprimeable number, because it can be changed into a prime (243123340729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60491482 + ... + 60495500.

It is an arithmetic number, because the mean of its divisors is an integer number (7605397800).

Almost surely, 2^243123340329 is an apocalyptic number.

It is an amenable number.

243123340329 is a deficient number, since it is larger than the sum of its proper divisors (121935754071).

243123340329 is a wasteful number, since it uses less digits than its factorization.

243123340329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6446 (or 6443 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 243123340329 in words is "two hundred forty-three billion, one hundred twenty-three million, three hundred forty thousand, three hundred twenty-nine".