111431041109 has 2 divisors, whose sum is σ = 111431041110. Its totient is φ = 111431041108.

The previous prime is 111431041063. The next prime is 111431041129. The reversal of 111431041109 is 901140134111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94034222500 + 17396818609 = 306650^2 + 131897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111431041109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111431041129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55715520554 + 55715520555.

It is an arithmetic number, because the mean of its divisors is an integer number (55715520555).

Almost surely, 2^111431041109 is an apocalyptic number.

It is an amenable number.

111431041109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111431041109 is an equidigital number, since it uses as much as digits as its factorization.

111431041109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 111431041109 in words is "one hundred eleven billion, four hundred thirty-one million, forty-one thousand, one hundred nine".