111131230403 has 2 divisors, whose sum is σ = 111131230404. Its totient is φ = 111131230402.

The previous prime is 111131230321. The next prime is 111131230409. The reversal of 111131230403 is 304032131111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111131230403 is a prime.

It is not a weakly prime, because it can be changed into another prime (111131230409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55565615201 + 55565615202.

It is an arithmetic number, because the mean of its divisors is an integer number (55565615202).

Almost surely, 2^111131230403 is an apocalyptic number.

111131230403 is a deficient number, since it is larger than the sum of its proper divisors (1).

111131230403 is an equidigital number, since it uses as much as digits as its factorization.

111131230403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111131230403 its reverse (304032131111), we get a palindrome (415163361514).

The spelling of 111131230403 in words is "one hundred eleven billion, one hundred thirty-one million, two hundred thirty thousand, four hundred three".