204112313 has 4 divisors (see below), whose sum is σ = 209628900. Its totient is φ = 198595728.

The previous prime is 204112289. The next prime is 204112331. The reversal of 204112313 is 313211402.

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 166203664 + 37908649 = 12892^2 + 6157^2 .

It is a cyclic number.

It is not a de Polignac number, because 204112313 - 2⁸ = 204112057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204112291 and 204112300.

It is not an unprimeable number, because it can be changed into a prime (204112393) 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, 2758238 + ... + 2758311.

It is an arithmetic number, because the mean of its divisors is an integer number (52407225).

Almost surely, 2^204112313 is an apocalyptic number.

It is an amenable number.

204112313 is a deficient number, since it is larger than the sum of its proper divisors (5516587).

204112313 is an equidigital number, since it uses as much as digits as its factorization.

204112313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516586.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 204112313 is about 14286.7880575026. The cubic root of 204112313 is about 588.7845445928.

Adding to 204112313 its reverse (313211402), we get a palindrome (517323715).

The spelling of 204112313 in words is "two hundred four million, one hundred twelve thousand, three hundred thirteen".