213123203 has 8 divisors (see below), whose sum is σ = 229360320. Its totient is φ = 197297280.

The previous prime is 213123199. The next prime is 213123217. The reversal of 213123203 is 302321312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213123203 - 2² = 213123199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213123223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101723 + ... + 103796.

It is an arithmetic number, because the mean of its divisors is an integer number (28670040).

Almost surely, 2^213123203 is an apocalyptic number.

213123203 is a deficient number, since it is larger than the sum of its proper divisors (16237117).

213123203 is a wasteful number, since it uses less digits than its factorization.

213123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205597.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 213123203 is about 14598.7397743778. The cubic root of 213123203 is about 597.3243852862.

Adding to 213123203 its reverse (302321312), we get a palindrome (515444515).

The spelling of 213123203 in words is "two hundred thirteen million, one hundred twenty-three thousand, two hundred three".