204312312125 has 24 divisors (see below), whose sum is σ = 261352786344. Its totient is φ = 159463104000.

The previous prime is 204312312067. The next prime is 204312312163. The reversal of 204312312125 is 521213213402.

It can be written as a sum of positive squares in 12 ways, for example, as 181897132036 + 22415180089 = 426494^2 + 149717^2 .

It is not a de Polignac number, because 204312312125 - 2⁸ = 204312311869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204312312094 and 204312312103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276044 + ... + 696293.

It is an arithmetic number, because the mean of its divisors is an integer number (10889699431).

Almost surely, 2^204312312125 is an apocalyptic number.

204312312125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204312312125 is a deficient number, since it is larger than the sum of its proper divisors (57040474219).

204312312125 is an frugal number, since it uses more digits than its factorization.

204312312125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972434 (or 972383 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 204312312125 its reverse (521213213402), we get a palindrome (725525525527).

The spelling of 204312312125 in words is "two hundred four billion, three hundred twelve million, three hundred twelve thousand, one hundred twenty-five".