111330689 has 2 divisors, whose sum is σ = 111330690. Its totient is φ = 111330688.

The previous prime is 111330677. The next prime is 111330691. The reversal of 111330689 is 986033111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74218225 + 37112464 = 8615^2 + 6092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111330689 is a prime.

Together with 111330691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111333689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55665344 + 55665345.

It is an arithmetic number, because the mean of its divisors is an integer number (55665345).

Almost surely, 2^111330689 is an apocalyptic number.

It is an amenable number.

111330689 is a deficient number, since it is larger than the sum of its proper divisors (1).

111330689 is an equidigital number, since it uses as much as digits as its factorization.

111330689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 111330689 is about 10551.3358869861. The cubic root of 111330689 is about 481.0663345020.

The spelling of 111330689 in words is "one hundred eleven million, three hundred thirty thousand, six hundred eighty-nine".