213920203 has 4 divisors (see below), whose sum is σ = 244480240. Its totient is φ = 183360168.

The previous prime is 213920177. The next prime is 213920219. The reversal of 213920203 is 302029312.

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 213920203 - 2²⁵ = 180365771 is a prime.

It is a super-2 number, since 2×213920203² = 91523706503122418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213920293) 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, 15280008 + ... + 15280021.

It is an arithmetic number, because the mean of its divisors is an integer number (61120060).

Almost surely, 2^213920203 is an apocalyptic number.

213920203 is a deficient number, since it is larger than the sum of its proper divisors (30560037).

213920203 is an equidigital number, since it uses as much as digits as its factorization.

213920203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30560036.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 213920203 is about 14626.0111787186. The cubic root of 213920203 is about 598.0680479828.

Adding to 213920203 its reverse (302029312), we get a palindrome (515949515).

The spelling of 213920203 in words is "two hundred thirteen million, nine hundred twenty thousand, two hundred three".