203231311243 has 8 divisors (see below), whose sum is σ = 205380612720. Its totient is φ = 201086638560.

The previous prime is 203231311237. The next prime is 203231311259. The reversal of 203231311243 is 342113132302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203231311243 - 2⁹ = 203231310731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203231311223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068888 + ... + 1244581.

It is an arithmetic number, because the mean of its divisors is an integer number (25672576590).

Almost surely, 2^203231311243 is an apocalyptic number.

203231311243 is a deficient number, since it is larger than the sum of its proper divisors (2149301477).

203231311243 is a wasteful number, since it uses less digits than its factorization.

203231311243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314397.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 203231311243 its reverse (342113132302), we get a palindrome (545344443545).

The spelling of 203231311243 in words is "two hundred three billion, two hundred thirty-one million, three hundred eleven thousand, two hundred forty-three".