204120314231 has 4 divisors (see below), whose sum is σ = 204121240464. Its totient is φ = 204119388000.

The previous prime is 204120314201. The next prime is 204120314239. The reversal of 204120314231 is 132413021402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 132413021402 = 2 ⋅66206510701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204120314231 is a prime.

It is a super-2 number, since 2×204120314231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204120314197 and 204120314206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204120314239) 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, 78911 + ... + 643791.

It is an arithmetic number, because the mean of its divisors is an integer number (51030310116).

Almost surely, 2^204120314231 is an apocalyptic number.

204120314231 is a deficient number, since it is larger than the sum of its proper divisors (926233).

204120314231 is an equidigital number, since it uses as much as digits as its factorization.

204120314231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926232.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 204120314231 its reverse (132413021402), we get a palindrome (336533335633).

The spelling of 204120314231 in words is "two hundred four billion, one hundred twenty million, three hundred fourteen thousand, two hundred thirty-one".