243200252321 has 8 divisors (see below), whose sum is σ = 261935377704. Its totient is φ = 224469043200.

The previous prime is 243200252257. The next prime is 243200252401. The reversal of 243200252321 is 123252002342.

It can be written as a sum of positive squares in 4 ways, for example, as 11491840000 + 231708412321 = 107200^2 + 481361^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 243200252321 - 2⁶ = 243200252257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243200252221) 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, 849446 + ... + 1099071.

It is an arithmetic number, because the mean of its divisors is an integer number (32741922213).

Almost surely, 2^243200252321 is an apocalyptic number.

It is an amenable number.

243200252321 is a deficient number, since it is larger than the sum of its proper divisors (18735125383).

243200252321 is a wasteful number, since it uses less digits than its factorization.

243200252321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958131.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 243200252321 its reverse (123252002342), we get a palindrome (366452254663).

The spelling of 243200252321 in words is "two hundred forty-three billion, two hundred million, two hundred fifty-two thousand, three hundred twenty-one".