203604423 has 32 divisors (see below), whose sum is σ = 304238592. Its totient is φ = 120060000.

The previous prime is 203604421. The next prime is 203604431. The reversal of 203604423 is 324406302.

It is a happy number.

It is not a de Polignac number, because 203604423 - 2¹ = 203604421 is a prime.

It is a super-2 number, since 2×203604423² = 82909522130325858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203604393 and 203604402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203604421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389040 + ... + 389562.

It is an arithmetic number, because the mean of its divisors is an integer number (9507456).

Almost surely, 2^203604423 is an apocalyptic number.

203604423 is a deficient number, since it is larger than the sum of its proper divisors (100634169).

203604423 is a wasteful number, since it uses less digits than its factorization.

203604423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 203604423 is about 14269.0021725417. The cubic root of 203604423 is about 588.2957840145.

The spelling of 203604423 in words is "two hundred three million, six hundred four thousand, four hundred twenty-three".