211042003 has 2 divisors, whose sum is σ = 211042004. Its totient is φ = 211042002.

The previous prime is 211042001. The next prime is 211042009. The reversal of 211042003 is 300240112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211042003 - 2¹ = 211042001 is a prime.

Together with 211042001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211042001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105521001 + 105521002.

It is an arithmetic number, because the mean of its divisors is an integer number (105521002).

Almost surely, 2^211042003 is an apocalyptic number.

211042003 is a deficient number, since it is larger than the sum of its proper divisors (1).

211042003 is an equidigital number, since it uses as much as digits as its factorization.

211042003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 211042003 is about 14527.2847772734. The cubic root of 211042003 is about 595.3736823606.

Adding to 211042003 its reverse (300240112), we get a palindrome (511282115).

The spelling of 211042003 in words is "two hundred eleven million, forty-two thousand, three".