231312344413 has 2 divisors, whose sum is σ = 231312344414. Its totient is φ = 231312344412.

The previous prime is 231312344411. The next prime is 231312344447. The reversal of 231312344413 is 314443213132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218143175364 + 13169169049 = 467058^2 + 114757^2 .

It is a cyclic number.

It is not a de Polignac number, because 231312344413 - 2¹ = 231312344411 is a prime.

Together with 231312344411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231312344411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656172206 + 115656172207.

It is an arithmetic number, because the mean of its divisors is an integer number (115656172207).

Almost surely, 2^231312344413 is an apocalyptic number.

It is an amenable number.

231312344413 is a deficient number, since it is larger than the sum of its proper divisors (1).

231312344413 is an equidigital number, since it uses as much as digits as its factorization.

231312344413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

Adding to 231312344413 its reverse (314443213132), we get a palindrome (545755557545).

The spelling of 231312344413 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred forty-four thousand, four hundred thirteen".