243031132213 has 2 divisors, whose sum is σ = 243031132214. Its totient is φ = 243031132212.

The previous prime is 243031132189. The next prime is 243031132261. The reversal of 243031132213 is 312231130342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235203660484 + 7827471729 = 484978^2 + 88473^2 .

It is a cyclic number.

It is not a de Polignac number, because 243031132213 - 2³³ = 234441197621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243031132613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121515566106 + 121515566107.

It is an arithmetic number, because the mean of its divisors is an integer number (121515566107).

Almost surely, 2^243031132213 is an apocalyptic number.

It is an amenable number.

243031132213 is a deficient number, since it is larger than the sum of its proper divisors (1).

243031132213 is an equidigital number, since it uses as much as digits as its factorization.

243031132213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 243031132213 its reverse (312231130342), we get a palindrome (555262262555).

The spelling of 243031132213 in words is "two hundred forty-three billion, thirty-one million, one hundred thirty-two thousand, two hundred thirteen".