213104503 has 4 divisors (see below), whose sum is σ = 225640080. Its totient is φ = 200568928.

The previous prime is 213104471. The next prime is 213104531. The reversal of 213104503 is 305401312.

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

It is a cyclic number.

It is not a de Polignac number, because 213104503 - 2⁵ = 213104471 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 (213104803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6267763 + ... + 6267796.

It is an arithmetic number, because the mean of its divisors is an integer number (56410020).

Almost surely, 2^213104503 is an apocalyptic number.

213104503 is a deficient number, since it is larger than the sum of its proper divisors (12535577).

213104503 is a wasteful number, since it uses less digits than its factorization.

213104503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12535576.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 213104503 is about 14598.0992940862. The cubic root of 213104503 is about 597.3069144954.

Adding to 213104503 its reverse (305401312), we get a palindrome (518505815).

The spelling of 213104503 in words is "two hundred thirteen million, one hundred four thousand, five hundred three".