243231242311321 has 8 divisors (see below), whose sum is σ = 265343325163488. Its totient is φ = 221119184748000.

The previous prime is 243231242311237. The next prime is 243231242311333. The reversal of 243231242311321 is 123113242132342.

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

It is not a de Polignac number, because 243231242311321 - 2⁴³ = 234435149289113 is a prime.

It is a super-2 number, since 2×243231242311321² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243231242311121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17785141 + ... + 28333261.

It is an arithmetic number, because the mean of its divisors is an integer number (33167915645436).

Almost surely, 2^{243231242311321} is an apocalyptic number.

It is an amenable number.

243231242311321 is a deficient number, since it is larger than the sum of its proper divisors (22112082852167).

243231242311321 is a wasteful number, since it uses less digits than its factorization.

243231242311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12644423.

The product of its digits is 41472, while the sum is 34.

Adding to 243231242311321 its reverse (123113242132342), we get a palindrome (366344484443663).

The spelling of 243231242311321 in words is "two hundred forty-three trillion, two hundred thirty-one billion, two hundred forty-two million, three hundred eleven thousand, three hundred twenty-one".