200523423 has 4 divisors (see below), whose sum is σ = 267364568. Its totient is φ = 133682280.

The previous prime is 200523391. The next prime is 200523439. The reversal of 200523423 is 324325002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 200523423 - 2⁵ = 200523391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200523423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200523493) 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, 33420568 + ... + 33420573.

It is an arithmetic number, because the mean of its divisors is an integer number (66841142).

Almost surely, 2^200523423 is an apocalyptic number.

200523423 is a deficient number, since it is larger than the sum of its proper divisors (66841145).

200523423 is an equidigital number, since it uses as much as digits as its factorization.

200523423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66841144.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 200523423 is about 14160.6293292353. The cubic root of 200523423 is about 585.3132692797.

Adding to 200523423 its reverse (324325002), we get a palindrome (524848425).

The spelling of 200523423 in words is "two hundred million, five hundred twenty-three thousand, four hundred twenty-three".