231311132203 has 4 divisors (see below), whose sum is σ = 232146190720. Its totient is φ = 230476073688.

The previous prime is 231311132201. The next prime is 231311132207. The reversal of 231311132203 is 302231113132.

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 231311132203 - 2¹ = 231311132201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231311132201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417528843 + ... + 417529396.

It is an arithmetic number, because the mean of its divisors is an integer number (58036547680).

Almost surely, 2^231311132203 is an apocalyptic number.

231311132203 is a deficient number, since it is larger than the sum of its proper divisors (835058517).

231311132203 is an equidigital number, since it uses as much as digits as its factorization.

231311132203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835058516.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231311132203 its reverse (302231113132), we get a palindrome (533542245335).

The spelling of 231311132203 in words is "two hundred thirty-one billion, three hundred eleven million, one hundred thirty-two thousand, two hundred three".