231310331203 has 4 divisors (see below), whose sum is σ = 264354664240. Its totient is φ = 198265998168.

The previous prime is 231310331179. The next prime is 231310331209. The reversal of 231310331203 is 302133013132.

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

It is a de Polignac number, because none of the positive numbers 2^k-231310331203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231310331209) 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, 16522166508 + ... + 16522166521.

It is an arithmetic number, because the mean of its divisors is an integer number (66088666060).

Almost surely, 2^231310331203 is an apocalyptic number.

231310331203 is a deficient number, since it is larger than the sum of its proper divisors (33044333037).

231310331203 is an equidigital number, since it uses as much as digits as its factorization.

231310331203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33044333036.

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

Adding to 231310331203 its reverse (302133013132), we get a palindrome (533443344335).

The spelling of 231310331203 in words is "two hundred thirty-one billion, three hundred ten million, three hundred thirty-one thousand, two hundred three".