203404033243 has 4 divisors (see below), whose sum is σ = 203406108808. Its totient is φ = 203401957680.

The previous prime is 203404033213. The next prime is 203404033271. The reversal of 203404033243 is 342330404302.

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 203404033243 - 2²¹ = 203401936091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203404033213) 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, 883098 + ... + 1089343.

It is an arithmetic number, because the mean of its divisors is an integer number (50851527202).

Almost surely, 2^203404033243 is an apocalyptic number.

203404033243 is a deficient number, since it is larger than the sum of its proper divisors (2075565).

203404033243 is a wasteful number, since it uses less digits than its factorization.

203404033243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075564.

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 203404033243 its reverse (342330404302), we get a palindrome (545734437545).

The spelling of 203404033243 in words is "two hundred three billion, four hundred four million, thirty-three thousand, two hundred forty-three".