2100803 has 2 divisors, whose sum is σ = 2100804. Its totient is φ = 2100802.

The previous prime is 2100793. The next prime is 2100821. The reversal of 2100803 is 3080012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100803 - 2¹⁴ = 2084419 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050401 + 1050402.

It is an arithmetic number, because the mean of its divisors is an integer number (1050402).

2^2100803 is an apocalyptic number.

2100803 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100803 is an equidigital number, since it uses as much as digits as its factorization.

2100803 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 14.

The square root of 2100803 is about 1449.4147094603. The cubic root of 2100803 is about 128.0742367214.

Adding to 2100803 its reverse (3080012), we get a palindrome (5180815).

The spelling of 2100803 in words is "two million, one hundred thousand, eight hundred three".