203572423 has 4 divisors (see below), whose sum is σ = 204595600. Its totient is φ = 202549248.

The previous prime is 203572367. The next prime is 203572427. The reversal of 203572423 is 324275302.

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 203572423 - 2⁹ = 203571911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203572391 and 203572400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203572427) 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, 511290 + ... + 511687.

It is an arithmetic number, because the mean of its divisors is an integer number (51148900).

Almost surely, 2^203572423 is an apocalyptic number.

203572423 is a deficient number, since it is larger than the sum of its proper divisors (1023177).

203572423 is a wasteful number, since it uses less digits than its factorization.

203572423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023176.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 203572423 is about 14267.8808167156. The cubic root of 203572423 is about 588.2649620721.

The spelling of 203572423 in words is "two hundred three million, five hundred seventy-two thousand, four hundred twenty-three".