204431333031211 has 16 divisors (see below), whose sum is σ = 240239365779168. Its totient is φ = 171501990969600.

The previous prime is 204431333031187. The next prime is 204431333031293. The reversal of 204431333031211 is 112130333134402.

It is a cyclic number.

It is not a de Polignac number, because 204431333031211 - 2³⁹ = 203881577217323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204431333091211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202737010 + ... + 203742871.

It is an arithmetic number, because the mean of its divisors is an integer number (15014960361198).

Almost surely, 2^{204431333031211} is an apocalyptic number.

204431333031211 is a deficient number, since it is larger than the sum of its proper divisors (35808032747957).

204431333031211 is a wasteful number, since it uses less digits than its factorization.

204431333031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406483422.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 204431333031211 its reverse (112130333134402), we get a palindrome (316561666165613).

The spelling of 204431333031211 in words is "two hundred four trillion, four hundred thirty-one billion, three hundred thirty-three million, thirty-one thousand, two hundred eleven".