231242110213 has 2 divisors, whose sum is σ = 231242110214. Its totient is φ = 231242110212.

The previous prime is 231242110171. The next prime is 231242110237. The reversal of 231242110213 is 312011242132.

231242110213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164545432164 + 66696678049 = 405642^2 + 258257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231242110213 is a prime.

It is a super-2 number, since 2×231242110213² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231242110273) 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, 115621055106 + 115621055107.

It is an arithmetic number, because the mean of its divisors is an integer number (115621055107).

Almost surely, 2^231242110213 is an apocalyptic number.

It is an amenable number.

231242110213 is a deficient number, since it is larger than the sum of its proper divisors (1).

231242110213 is an equidigital number, since it uses as much as digits as its factorization.

231242110213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 231242110213 its reverse (312011242132), we get a palindrome (543253352345).

The spelling of 231242110213 in words is "two hundred thirty-one billion, two hundred forty-two million, one hundred ten thousand, two hundred thirteen".