209102103 has 12 divisors (see below), whose sum is σ = 345184528. Its totient is φ = 119486880.

The previous prime is 209102081. The next prime is 209102111. The reversal of 209102103 is 301201902.

It is a happy number.

It is not a de Polignac number, because 209102103 - 2¹⁴ = 209085719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209102123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1659478 + ... + 1659603.

Almost surely, 2^209102103 is an apocalyptic number.

209102103 is a deficient number, since it is larger than the sum of its proper divisors (136082425).

209102103 is a wasteful number, since it uses less digits than its factorization.

209102103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319094 (or 3319091 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 209102103 is about 14460.3631697133. The cubic root of 209102103 is about 593.5438374474.

The spelling of 209102103 in words is "two hundred nine million, one hundred two thousand, one hundred three".