204115361 has 4 divisors (see below), whose sum is σ = 204167424. Its totient is φ = 204063300.

The previous prime is 204115339. The next prime is 204115391. The reversal of 204115361 is 163511402.

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 a de Polignac number, because none of the positive numbers 2^k-204115361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204115391) 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, 19625 + ... + 28166.

It is an arithmetic number, because the mean of its divisors is an integer number (51041856).

Almost surely, 2^204115361 is an apocalyptic number.

It is an amenable number.

204115361 is a deficient number, since it is larger than the sum of its proper divisors (52063).

204115361 is an equidigital number, since it uses as much as digits as its factorization.

204115361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52062.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 204115361 is about 14286.8947290865. The cubic root of 204115361 is about 588.7874753426.

Adding to 204115361 its reverse (163511402), we get a palindrome (367626763).

The spelling of 204115361 in words is "two hundred four million, one hundred fifteen thousand, three hundred sixty-one".