204520213 has 8 divisors (see below), whose sum is σ = 207035136. Its totient is φ = 202020000.

The previous prime is 204520207. The next prime is 204520219. The reversal of 204520213 is 312025402.

It is an interprime number because it is at equal distance from previous prime (204520207) and next prime (204520219).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204520213 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 (204520219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25713 + ... + 32713.

It is an arithmetic number, because the mean of its divisors is an integer number (25879392).

Almost surely, 2^204520213 is an apocalyptic number.

It is an amenable number.

204520213 is a deficient number, since it is larger than the sum of its proper divisors (2514923).

204520213 is a wasteful number, since it uses less digits than its factorization.

204520213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7355.

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

The square root of 204520213 is about 14301.0563595841. The cubic root of 204520213 is about 589.1764945063.

Adding to 204520213 its reverse (312025402), we get a palindrome (516545615).

The spelling of 204520213 in words is "two hundred four million, five hundred twenty thousand, two hundred thirteen".