209013103 has 4 divisors (see below), whose sum is σ = 225091048. Its totient is φ = 192935160.

The previous prime is 209013061. The next prime is 209013131. The reversal of 209013103 is 301310902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209013103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209013193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8038953 + ... + 8038978.

It is an arithmetic number, because the mean of its divisors is an integer number (56272762).

Almost surely, 2^209013103 is an apocalyptic number.

209013103 is a deficient number, since it is larger than the sum of its proper divisors (16077945).

209013103 is a wasteful number, since it uses less digits than its factorization.

209013103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16077944.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 209013103 is about 14457.2854644293. The cubic root of 209013103 is about 593.4596155972.

The spelling of 209013103 in words is "two hundred nine million, thirteen thousand, one hundred three".