200434240423 has 2 divisors, whose sum is σ = 200434240424. Its totient is φ = 200434240422.

The previous prime is 200434240343. The next prime is 200434240483. The reversal of 200434240423 is 324042434002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200434240423 - 2¹³ = 200434232231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200434240391 and 200434240400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200434240483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100217120211 + 100217120212.

It is an arithmetic number, because the mean of its divisors is an integer number (100217120212).

Almost surely, 2^200434240423 is an apocalyptic number.

200434240423 is a deficient number, since it is larger than the sum of its proper divisors (1).

200434240423 is an equidigital number, since it uses as much as digits as its factorization.

200434240423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 200434240423 its reverse (324042434002), we get a palindrome (524476674425).

The spelling of 200434240423 in words is "two hundred billion, four hundred thirty-four million, two hundred forty thousand, four hundred twenty-three".