111665003 has 2 divisors, whose sum is σ = 111665004. Its totient is φ = 111665002.

The previous prime is 111664979. The next prime is 111665009. The reversal of 111665003 is 300566111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111665003 - 2⁶ = 111664939 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111665003.

It is not a weakly prime, because it can be changed into another prime (111665009) 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, 55832501 + 55832502.

It is an arithmetic number, because the mean of its divisors is an integer number (55832502).

Almost surely, 2^111665003 is an apocalyptic number.

111665003 is a deficient number, since it is larger than the sum of its proper divisors (1).

111665003 is an equidigital number, since it uses as much as digits as its factorization.

111665003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 111665003 is about 10567.1662710492. The cubic root of 111665003 is about 481.5473833418.

The spelling of 111665003 in words is "one hundred eleven million, six hundred sixty-five thousand, three".