204431404312213 has 32 divisors (see below), whose sum is σ = 226685012666112. Its totient is φ = 183157779571200.

The previous prime is 204431404312193. The next prime is 204431404312249. The reversal of 204431404312213 is 312213404134402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204431404312213 is a prime.

It is a super-3 number, since 3×204431404312213³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204431404352213) 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, 2107426570 + ... + 2107523572.

It is an arithmetic number, because the mean of its divisors is an integer number (7083906645816).

Almost surely, 2^{204431404312213} is an apocalyptic number.

It is an amenable number.

204431404312213 is a deficient number, since it is larger than the sum of its proper divisors (22253608353899).

204431404312213 is a wasteful number, since it uses less digits than its factorization.

204431404312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117325.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 204431404312213 its reverse (312213404134402), we get a palindrome (516644808446615).

The spelling of 204431404312213 in words is "two hundred four trillion, four hundred thirty-one billion, four hundred four million, three hundred twelve thousand, two hundred thirteen".