204431310230401 has 4 divisors (see below), whose sum is σ = 204431904025600. Its totient is φ = 204430716435204.

The previous prime is 204431310230363. The next prime is 204431310230431. The reversal of 204431310230401 is 104032013134402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204431310230401 - 2⁹ = 204431310229889 is a prime.

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 204431310230401.

It is not an unprimeable number, because it can be changed into a prime (204431310230431) 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, 296380881 + ... + 297069838.

It is an arithmetic number, because the mean of its divisors is an integer number (51107976006400).

Almost surely, 2^{204431310230401} is an apocalyptic number.

It is an amenable number.

204431310230401 is a deficient number, since it is larger than the sum of its proper divisors (593795199).

204431310230401 is an equidigital number, since it uses as much as digits as its factorization.

204431310230401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593795198.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 204431310230401 its reverse (104032013134402), we get a palindrome (308463323364803).

The spelling of 204431310230401 in words is "two hundred four trillion, four hundred thirty-one billion, three hundred ten million, two hundred thirty thousand, four hundred one".