205204213 has 4 divisors (see below), whose sum is σ = 209976448. Its totient is φ = 200431980.

The previous prime is 205204211. The next prime is 205204243. The reversal of 205204213 is 312402502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205204213 - 2¹ = 205204211 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 (205204211) 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, 2386053 + ... + 2386138.

It is an arithmetic number, because the mean of its divisors is an integer number (52494112).

Almost surely, 2^205204213 is an apocalyptic number.

It is an amenable number.

205204213 is a deficient number, since it is larger than the sum of its proper divisors (4772235).

205204213 is an equidigital number, since it uses as much as digits as its factorization.

205204213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772234.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 205204213 is about 14324.9507154475. The cubic root of 205204213 is about 589.8325800944.

Adding to 205204213 its reverse (312402502), we get a palindrome (517606715).

The spelling of 205204213 in words is "two hundred five million, two hundred four thousand, two hundred thirteen".