204500214431 has 4 divisors (see below), whose sum is σ = 204910035000. Its totient is φ = 204090393864.

The previous prime is 204500214427. The next prime is 204500214493. The reversal of 204500214431 is 134412005402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204500214431 - 2² = 204500214427 is a prime.

It is a super-2 number, since 2×204500214431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204500214431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204500214031) 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, 204909536 + ... + 204910533.

It is an arithmetic number, because the mean of its divisors is an integer number (51227508750).

Almost surely, 2^204500214431 is an apocalyptic number.

204500214431 is a deficient number, since it is larger than the sum of its proper divisors (409820569).

204500214431 is an equidigital number, since it uses as much as digits as its factorization.

204500214431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409820568.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 204500214431 its reverse (134412005402), we get a palindrome (338912219833).

The spelling of 204500214431 in words is "two hundred four billion, five hundred million, two hundred fourteen thousand, four hundred thirty-one".