200434423 has 4 divisors (see below), whose sum is σ = 229067920. Its totient is φ = 171800928.

The previous prime is 200434411. The next prime is 200434427. The reversal of 200434423 is 324434002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324434002 = 2 ⋅162217001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200434423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200434394 and 200434403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200434427) 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, 14316738 + ... + 14316751.

It is an arithmetic number, because the mean of its divisors is an integer number (57266980).

Almost surely, 2^200434423 is an apocalyptic number.

200434423 is a deficient number, since it is larger than the sum of its proper divisors (28633497).

200434423 is an equidigital number, since it uses as much as digits as its factorization.

200434423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28633496.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 200434423 is about 14157.4864647649. The cubic root of 200434423 is about 585.2266616255.

Adding to 200434423 its reverse (324434002), we get a palindrome (524868425).

The spelling of 200434423 in words is "two hundred million, four hundred thirty-four thousand, four hundred twenty-three".