204013213 has 4 divisors (see below), whose sum is σ = 206116540. Its totient is φ = 201909888.

The previous prime is 204013211. The next prime is 204013217. The reversal of 204013213 is 312310402.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 167495364 + 36517849 = 12942^2 + 6043^2 .

It is a cyclic number.

It is not a de Polignac number, because 204013213 - 2¹ = 204013211 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 (204013211) 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, 1051518 + ... + 1051711.

It is an arithmetic number, because the mean of its divisors is an integer number (51529135).

Almost surely, 2^204013213 is an apocalyptic number.

It is an amenable number.

204013213 is a deficient number, since it is larger than the sum of its proper divisors (2103327).

204013213 is an equidigital number, since it uses as much as digits as its factorization.

204013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103326.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 204013213 is about 14283.3193971149. The cubic root of 204013213 is about 588.6892408633.

Adding to 204013213 its reverse (312310402), we get a palindrome (516323615).

The spelling of 204013213 in words is "two hundred four million, thirteen thousand, two hundred thirteen".