204330421423 has 2 divisors, whose sum is σ = 204330421424. Its totient is φ = 204330421422.

The previous prime is 204330421343. The next prime is 204330421459. The reversal of 204330421423 is 324124033402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204330421423 - 2³³ = 195740486831 is a prime.

It is a super-2 number, since 2×204330421423² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204330421391 and 204330421400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204330421483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102165210711 + 102165210712.

It is an arithmetic number, because the mean of its divisors is an integer number (102165210712).

Almost surely, 2^204330421423 is an apocalyptic number.

204330421423 is a deficient number, since it is larger than the sum of its proper divisors (1).

204330421423 is an equidigital number, since it uses as much as digits as its factorization.

204330421423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 204330421423 its reverse (324124033402), we get a palindrome (528454454825).

The spelling of 204330421423 in words is "two hundred four billion, three hundred thirty million, four hundred twenty-one thousand, four hundred twenty-three".