231422313121 has 2 divisors, whose sum is σ = 231422313122. Its totient is φ = 231422313120.

The previous prime is 231422313119. The next prime is 231422313139. The reversal of 231422313121 is 121313224132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227781880225 + 3640432896 = 477265^2 + 60336^2 .

It is a cyclic number.

It is not a de Polignac number, because 231422313121 - 2¹ = 231422313119 is a prime.

Together with 231422313119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231422313191) 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, 115711156560 + 115711156561.

It is an arithmetic number, because the mean of its divisors is an integer number (115711156561).

Almost surely, 2^231422313121 is an apocalyptic number.

It is an amenable number.

231422313121 is a deficient number, since it is larger than the sum of its proper divisors (1).

231422313121 is an equidigital number, since it uses as much as digits as its factorization.

231422313121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

Adding to 231422313121 its reverse (121313224132), we get a palindrome (352735537253).

The spelling of 231422313121 in words is "two hundred thirty-one billion, four hundred twenty-two million, three hundred thirteen thousand, one hundred twenty-one".