231303203311 has 4 divisors (see below), whose sum is σ = 244909274112. Its totient is φ = 217697132512.

The previous prime is 231303203303. The next prime is 231303203357. The reversal of 231303203311 is 113302303132.

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 231303203311 - 2³ = 231303203303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231303203111) 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, 6803035375 + ... + 6803035408.

It is an arithmetic number, because the mean of its divisors is an integer number (61227318528).

Almost surely, 2^231303203311 is an apocalyptic number.

231303203311 is a deficient number, since it is larger than the sum of its proper divisors (13606070801).

231303203311 is a wasteful number, since it uses less digits than its factorization.

231303203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606070800.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 231303203311 its reverse (113302303132), we get a palindrome (344605506443).

The spelling of 231303203311 in words is "two hundred thirty-one billion, three hundred three million, two hundred three thousand, three hundred eleven".