203223232243 has 4 divisors (see below), whose sum is σ = 215177540040. Its totient is φ = 191268924448.

The previous prime is 203223232213. The next prime is 203223232259. The reversal of 203223232243 is 342232322302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203223232243 is a prime.

It is a super-2 number, since 2×203223232243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203223232213) 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, 5977153873 + ... + 5977153906.

It is an arithmetic number, because the mean of its divisors is an integer number (53794385010).

Almost surely, 2^203223232243 is an apocalyptic number.

203223232243 is a deficient number, since it is larger than the sum of its proper divisors (11954307797).

203223232243 is a wasteful number, since it uses less digits than its factorization.

203223232243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11954307796.

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

Adding to 203223232243 its reverse (342232322302), we get a palindrome (545455554545).

The spelling of 203223232243 in words is "two hundred three billion, two hundred twenty-three million, two hundred thirty-two thousand, two hundred forty-three".