111423589 has 2 divisors, whose sum is σ = 111423590. Its totient is φ = 111423588.

The previous prime is 111423563. The next prime is 111423643. The reversal of 111423589 is 985324111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85840225 + 25583364 = 9265^2 + 5058^2 .

It is an emirp because it is prime and its reverse (985324111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111423589 - 2¹³ = 111415397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111423089) 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, 55711794 + 55711795.

It is an arithmetic number, because the mean of its divisors is an integer number (55711795).

Almost surely, 2^111423589 is an apocalyptic number.

It is an amenable number.

111423589 is a deficient number, since it is larger than the sum of its proper divisors (1).

111423589 is an equidigital number, since it uses as much as digits as its factorization.

111423589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 111423589 is about 10555.7372551613. The cubic root of 111423589 is about 481.2001060547.

The spelling of 111423589 in words is "one hundred eleven million, four hundred twenty-three thousand, five hundred eighty-nine".