231313111111103 has 24 divisors (see below), whose sum is σ = 270716806985856. Its totient is φ = 193605533503200.

The previous prime is 231313111111079. The next prime is 231313111111109. The reversal of 231313111111103 is 301111111313132.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-231313111111103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313111111109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23727593 + ... + 32025378.

It is an arithmetic number, because the mean of its divisors is an integer number (11279866957744).

Almost surely, 2^{231313111111103} is an apocalyptic number.

231313111111103 is a deficient number, since it is larger than the sum of its proper divisors (39403695874753).

231313111111103 is an equidigital number, since it uses as much as digits as its factorization.

231313111111103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55753295 (or 55753242 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

Adding to 231313111111103 its reverse (301111111313132), we get a palindrome (532424222424235).

The spelling of 231313111111103 in words is "two hundred thirty-one trillion, three hundred thirteen billion, one hundred eleven million, one hundred eleven thousand, one hundred three".