203213344243 has 12 divisors (see below), whose sum is σ = 254574959520. Its totient is φ = 160784183952.

The previous prime is 203213344237. The next prime is 203213344253. The reversal of 203213344243 is 342443312302.

It is a happy number.

It is not a de Polignac number, because 203213344243 - 2⁹ = 203213343731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203213344253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159507483 + ... + 159508756.

It is an arithmetic number, because the mean of its divisors is an integer number (21214579960).

Almost surely, 2^203213344243 is an apocalyptic number.

203213344243 is a deficient number, since it is larger than the sum of its proper divisors (51361615277).

203213344243 is a wasteful number, since it uses less digits than its factorization.

203213344243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319016266 (or 319016259 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 203213344243 its reverse (342443312302), we get a palindrome (545656656545).

The spelling of 203213344243 in words is "two hundred three billion, two hundred thirteen million, three hundred forty-four thousand, two hundred forty-three".