231332121313 has 2 divisors, whose sum is σ = 231332121314. Its totient is φ = 231332121312.

The previous prime is 231332121311. The next prime is 231332121323. The reversal of 231332121313 is 313121233132.

231332121313 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 can be written as a sum of positive squares in only one way, i.e., 217835025984 + 13497095329 = 466728^2 + 116177^2 .

It is a cyclic number.

It is not a de Polignac number, because 231332121313 - 2¹ = 231332121311 is a prime.

Together with 231332121311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231332121311) 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, 115666060656 + 115666060657.

It is an arithmetic number, because the mean of its divisors is an integer number (115666060657).

Almost surely, 2^231332121313 is an apocalyptic number.

It is an amenable number.

231332121313 is a deficient number, since it is larger than the sum of its proper divisors (1).

231332121313 is an equidigital number, since it uses as much as digits as its factorization.

231332121313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 25.

Adding to 231332121313 its reverse (313121233132), we get a palindrome (544453354445).

The spelling of 231332121313 in words is "two hundred thirty-one billion, three hundred thirty-two million, one hundred twenty-one thousand, three hundred thirteen".