243200104321 has 4 divisors (see below), whose sum is σ = 243201740500. Its totient is φ = 243198468144.

The previous prime is 243200104319. The next prime is 243200104327. The reversal of 243200104321 is 123401002342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77114513025 + 166085591296 = 277695^2 + 407536^2 .

It is a cyclic number.

It is not a de Polignac number, because 243200104321 - 2¹ = 243200104319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243200104292 and 243200104301.

It is not an unprimeable number, because it can be changed into a prime (243200104327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570066 + ... + 900763.

It is an arithmetic number, because the mean of its divisors is an integer number (60800435125).

Almost surely, 2^243200104321 is an apocalyptic number.

It is an amenable number.

243200104321 is a deficient number, since it is larger than the sum of its proper divisors (1636179).

243200104321 is a wasteful number, since it uses less digits than its factorization.

243200104321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636178.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 243200104321 its reverse (123401002342), we get a palindrome (366601106663).

The spelling of 243200104321 in words is "two hundred forty-three billion, two hundred million, one hundred four thousand, three hundred twenty-one".