204431310230431 has 2 divisors, whose sum is σ = 204431310230432. Its totient is φ = 204431310230430.

The previous prime is 204431310230363. The next prime is 204431310230437. The reversal of 204431310230431 is 134032013134402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204431310230431 - 2⁹ = 204431310229919 is a prime.

It is a super-2 number, since 2×204431310230431² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204431310230393 and 204431310230402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204431310230437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102215655115215 + 102215655115216.

It is an arithmetic number, because the mean of its divisors is an integer number (102215655115216).

Almost surely, 2^{204431310230431} is an apocalyptic number.

204431310230431 is a deficient number, since it is larger than the sum of its proper divisors (1).

204431310230431 is an equidigital number, since it uses as much as digits as its factorization.

204431310230431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 204431310230431 its reverse (134032013134402), we get a palindrome (338463323364833).

The spelling of 204431310230431 in words is "two hundred four trillion, four hundred thirty-one billion, three hundred ten million, two hundred thirty thousand, four hundred thirty-one".