231313111103 has 2 divisors, whose sum is σ = 231313111104. Its totient is φ = 231313111102.

The previous prime is 231313111093. The next prime is 231313111121. The reversal of 231313111103 is 301111313132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231313111103 - 2²⁸ = 231044675647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231313111163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656555551 + 115656555552.

It is an arithmetic number, because the mean of its divisors is an integer number (115656555552).

Almost surely, 2^231313111103 is an apocalyptic number.

231313111103 is a deficient number, since it is larger than the sum of its proper divisors (1).

231313111103 is an equidigital number, since it uses as much as digits as its factorization.

231313111103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 231313111103 its reverse (301111313132), we get a palindrome (532424424235).

The spelling of 231313111103 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred eleven thousand, one hundred three".