204312134204311 has 32 divisors (see below), whose sum is σ = 243140349271680. Its totient is φ = 168035590195200.

The previous prime is 204312134204309. The next prime is 204312134204359. The reversal of 204312134204311 is 113402431213402.

It is a happy number.

It is not a de Polignac number, because 204312134204311 - 2¹ = 204312134204309 is a prime.

It is a super-2 number, since 2×204312134204311² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204312134604311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175136395 + ... + 176299123.

It is an arithmetic number, because the mean of its divisors is an integer number (7598135914740).

Almost surely, 2^{204312134204311} is an apocalyptic number.

204312134204311 is a deficient number, since it is larger than the sum of its proper divisors (38828215067369).

204312134204311 is a wasteful number, since it uses less digits than its factorization.

204312134204311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172875.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 204312134204311 its reverse (113402431213402), we get a palindrome (317714565417713).

The spelling of 204312134204311 in words is "two hundred four trillion, three hundred twelve billion, one hundred thirty-four million, two hundred four thousand, three hundred eleven".