204000013 has 4 divisors (see below), whose sum is σ = 233142880. Its totient is φ = 174857148.

The previous prime is 204000011. The next prime is 204000023. The reversal of 204000013 is 310000402.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310000402 = 2 ⋅155000201.

It is a cyclic number.

It is not a de Polignac number, because 204000013 - 2¹ = 204000011 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 (204000011) 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, 14571423 + ... + 14571436.

It is an arithmetic number, because the mean of its divisors is an integer number (58285720).

Almost surely, 2^204000013 is an apocalyptic number.

It is an amenable number.

204000013 is a deficient number, since it is larger than the sum of its proper divisors (29142867).

204000013 is an equidigital number, since it uses as much as digits as its factorization.

204000013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29142866.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 204000013 is about 14282.8573121767. The cubic root of 204000013 is about 588.6765441929.

Adding to 204000013 its reverse (310000402), we get a palindrome (514000415).

The spelling of 204000013 in words is "two hundred four million, thirteen", and thus it is an aban number.