2116903 has 2 divisors, whose sum is σ = 2116904. Its totient is φ = 2116902.

The previous prime is 2116901. The next prime is 2116921. The reversal of 2116903 is 3096112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2116903 - 2¹ = 2116901 is a prime.

It is a super-2 number, since 2×2116903² = 8962556622818, which contains 22 as substring.

Together with 2116901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058451 + 1058452.

It is an arithmetic number, because the mean of its divisors is an integer number (1058452).

2^2116903 is an apocalyptic number.

2116903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116903 is an equidigital number, since it uses as much as digits as its factorization.

2116903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2116903 is about 1454.9580749974. The cubic root of 2116903 is about 128.4005801871.

The spelling of 2116903 in words is "two million, one hundred sixteen thousand, nine hundred three".