203432423 has 4 divisors (see below), whose sum is σ = 203464008. Its totient is φ = 203400840.

The previous prime is 203432357. The next prime is 203432429. The reversal of 203432423 is 324234302.

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

It is a cyclic number.

It is not a de Polignac number, because 203432423 - 2¹⁶ = 203366887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203432429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2273 + ... + 20298.

It is an arithmetic number, because the mean of its divisors is an integer number (50866002).

Almost surely, 2^203432423 is an apocalyptic number.

203432423 is a deficient number, since it is larger than the sum of its proper divisors (31585).

203432423 is an equidigital number, since it uses as much as digits as its factorization.

203432423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31584.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 203432423 is about 14262.9738483950. The cubic root of 203432423 is about 588.1300780832.

Adding to 203432423 its reverse (324234302), we get a palindrome (527666725).

The spelling of 203432423 in words is "two hundred three million, four hundred thirty-two thousand, four hundred twenty-three".