111131323103 has 2 divisors, whose sum is σ = 111131323104. Its totient is φ = 111131323102.

The previous prime is 111131323099. The next prime is 111131323123. The reversal of 111131323103 is 301323131111.

It is an a-pointer prime, because the next prime (111131323123) can be obtained adding 111131323103 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111131323103 - 2² = 111131323099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111131323123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55565661551 + 55565661552.

It is an arithmetic number, because the mean of its divisors is an integer number (55565661552).

Almost surely, 2^111131323103 is an apocalyptic number.

111131323103 is a deficient number, since it is larger than the sum of its proper divisors (1).

111131323103 is an equidigital number, since it uses as much as digits as its factorization.

111131323103 is an evil number, because the sum of its binary digits is even.

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

Adding to 111131323103 its reverse (301323131111), we get a palindrome (412454454214).

The spelling of 111131323103 in words is "one hundred eleven billion, one hundred thirty-one million, three hundred twenty-three thousand, one hundred three".