2103911 has 2 divisors, whose sum is σ = 2103912. Its totient is φ = 2103910.

The previous prime is 2103901. The next prime is 2103919. The reversal of 2103911 is 1193012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2103911 - 2¹⁰ = 2102887 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051955 + 1051956.

It is an arithmetic number, because the mean of its divisors is an integer number (1051956).

2^2103911 is an apocalyptic number.

2103911 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103911 is an equidigital number, since it uses as much as digits as its factorization.

2103911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 2103911 is about 1450.4864701196. The cubic root of 2103911 is about 128.1373647397.

Adding to 2103911 its reverse (1193012), we get a palindrome (3296923).

The spelling of 2103911 in words is "two million, one hundred three thousand, nine hundred eleven".