111131430197 has 2 divisors, whose sum is σ = 111131430198. Its totient is φ = 111131430196.

The previous prime is 111131430191. The next prime is 111131430313. The reversal of 111131430197 is 791034131111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101145625156 + 9985805041 = 318034^2 + 99929^2 .

It is a cyclic number.

It is not a de Polignac number, because 111131430197 - 2²⁸ = 110862994741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111131430191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55565715098 + 55565715099.

It is an arithmetic number, because the mean of its divisors is an integer number (55565715099).

Almost surely, 2^111131430197 is an apocalyptic number.

It is an amenable number.

111131430197 is a deficient number, since it is larger than the sum of its proper divisors (1).

111131430197 is an equidigital number, since it uses as much as digits as its factorization.

111131430197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 111131430197 in words is "one hundred eleven billion, one hundred thirty-one million, four hundred thirty thousand, one hundred ninety-seven".