243330301021231 has 2 divisors, whose sum is σ = 243330301021232. Its totient is φ = 243330301021230.

The previous prime is 243330301021211. The next prime is 243330301021243. The reversal of 243330301021231 is 132120103033342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243330301021231 is a prime.

It is a super-2 number, since 2×243330301021231² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243330301021231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243330301021211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121665150510615 + 121665150510616.

It is an arithmetic number, because the mean of its divisors is an integer number (121665150510616).

Almost surely, 2^{243330301021231} is an apocalyptic number.

243330301021231 is a deficient number, since it is larger than the sum of its proper divisors (1).

243330301021231 is an equidigital number, since it uses as much as digits as its factorization.

243330301021231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 243330301021231 its reverse (132120103033342), we get a palindrome (375450404054573).

The spelling of 243330301021231 in words is "two hundred forty-three trillion, three hundred thirty billion, three hundred one million, twenty-one thousand, two hundred thirty-one".