111503389 has 2 divisors, whose sum is σ = 111503390. Its totient is φ = 111503388.

The previous prime is 111503387. The next prime is 111503393. The reversal of 111503389 is 983305111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104960025 + 6543364 = 10245^2 + 2558^2 .

It is a cyclic number.

It is not a de Polignac number, because 111503389 - 2¹ = 111503387 is a prime.

Together with 111503387, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 111503389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111503387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55751694 + 55751695.

It is an arithmetic number, because the mean of its divisors is an integer number (55751695).

Almost surely, 2^111503389 is an apocalyptic number.

It is an amenable number.

111503389 is a deficient number, since it is larger than the sum of its proper divisors (1).

111503389 is an equidigital number, since it uses as much as digits as its factorization.

111503389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 111503389 is about 10559.5165135531. The cubic root of 111503389 is about 481.3149548802.

The spelling of 111503389 in words is "one hundred eleven million, five hundred three thousand, three hundred eighty-nine".