2102103 has 18 divisors (see below), whose sum is σ = 3209544. Its totient is φ = 1325592.

The previous prime is 2102099. The next prime is 2102117. The reversal of 2102103 is 3012012.

It is a happy number.

It is not a de Polignac number, because 2102103 - 2² = 2102099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102143) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2926 + ... + 3572.

It is an arithmetic number, because the mean of its divisors is an integer number (178308).

2^2102103 is an apocalyptic number.

2102103 is a deficient number, since it is larger than the sum of its proper divisors (1107441).

2102103 is a wasteful number, since it uses less digits than its factorization.

2102103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2102103 is about 1449.8630969854. The cubic root of 2102103 is about 128.1006491895.

Adding to 2102103 its reverse (3012012), we get a palindrome (5114115).

Subtracting 2102103 from its reverse (3012012), we obtain a palindrome (909909).

The spelling of 2102103 in words is "two million, one hundred two thousand, one hundred three".