200403823 has 2 divisors, whose sum is σ = 200403824. Its totient is φ = 200403822.

The previous prime is 200403793. The next prime is 200403857. The reversal of 200403823 is 328304002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200403823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200403794 and 200403803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200403883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100201911 + 100201912.

It is an arithmetic number, because the mean of its divisors is an integer number (100201912).

Almost surely, 2^200403823 is an apocalyptic number.

200403823 is a deficient number, since it is larger than the sum of its proper divisors (1).

200403823 is an equidigital number, since it uses as much as digits as its factorization.

200403823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 200403823 is about 14156.4057232053. The cubic root of 200403823 is about 585.1968782397.

Adding to 200403823 its reverse (328304002), we get a palindrome (528707825).

The spelling of 200403823 in words is "two hundred million, four hundred three thousand, eight hundred twenty-three".