204131103413 has 4 divisors (see below), whose sum is σ = 209648160300. Its totient is φ = 198614046528.

The previous prime is 204131103403. The next prime is 204131103437. The reversal of 204131103413 is 314301131402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314301131402 = 2 ⋅157150565701.

It can be written as a sum of positive squares in 2 ways, for example, as 152719168849 + 51411934564 = 390793^2 + 226742^2 .

It is a cyclic number.

It is not a de Polignac number, because 204131103413 - 2⁸ = 204131103157 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 (204131103403) 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, 2758528388 + ... + 2758528461.

It is an arithmetic number, because the mean of its divisors is an integer number (52412040075).

Almost surely, 2^204131103413 is an apocalyptic number.

It is an amenable number.

204131103413 is a deficient number, since it is larger than the sum of its proper divisors (5517056887).

204131103413 is an equidigital number, since it uses as much as digits as its factorization.

204131103413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5517056886.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 204131103413 its reverse (314301131402), we get a palindrome (518432234815).

The spelling of 204131103413 in words is "two hundred four billion, one hundred thirty-one million, one hundred three thousand, four hundred thirteen".