243334131331 has 2 divisors, whose sum is σ = 243334131332. Its totient is φ = 243334131330.

The previous prime is 243334131329. The next prime is 243334131367. The reversal of 243334131331 is 133131433342.

243334131331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243334131331 - 2¹ = 243334131329 is a prime.

It is a super-2 number, since 2×243334131331² (a number of 24 digits) contains 22 as substring.

Together with 243334131329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 243334131293 and 243334131302.

It is not a weakly prime, because it can be changed into another prime (243334131301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121667065665 + 121667065666.

It is an arithmetic number, because the mean of its divisors is an integer number (121667065666).

Almost surely, 2^243334131331 is an apocalyptic number.

243334131331 is a deficient number, since it is larger than the sum of its proper divisors (1).

243334131331 is an equidigital number, since it uses as much as digits as its factorization.

243334131331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 31.

Adding to 243334131331 its reverse (133131433342), we get a palindrome (376465564673).

The spelling of 243334131331 in words is "two hundred forty-three billion, three hundred thirty-four million, one hundred thirty-one thousand, three hundred thirty-one".