111111359 has 2 divisors, whose sum is σ = 111111360. Its totient is φ = 111111358.

The previous prime is 111111331. The next prime is 111111361. The reversal of 111111359 is 953111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111111359 - 2²⁰ = 110062783 is a prime.

Together with 111111361, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111659) 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, 55555679 + 55555680.

It is an arithmetic number, because the mean of its divisors is an integer number (55555680).

Almost surely, 2^111111359 is an apocalyptic number.

111111359 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111359 is an equidigital number, since it uses as much as digits as its factorization.

111111359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135, while the sum is 23.

The square root of 111111359 is about 10540.9372922905. The cubic root of 111111359 is about 480.7502142865.

The spelling of 111111359 in words is "one hundred eleven million, one hundred eleven thousand, three hundred fifty-nine".