231131031203 has 4 divisors (see below), whose sum is σ = 232818119160. Its totient is φ = 229443943248.

The previous prime is 231131031193. The next prime is 231131031251. The reversal of 231131031203 is 302130131132.

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 231131031203 - 2⁶ = 231131031139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231131031253) 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, 843543773 + ... + 843544046.

It is an arithmetic number, because the mean of its divisors is an integer number (58204529790).

Almost surely, 2^231131031203 is an apocalyptic number.

231131031203 is a deficient number, since it is larger than the sum of its proper divisors (1687087957).

231131031203 is a wasteful number, since it uses less digits than its factorization.

231131031203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687087956.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231131031203 its reverse (302130131132), we get a palindrome (533261162335).

The spelling of 231131031203 in words is "two hundred thirty-one billion, one hundred thirty-one million, thirty-one thousand, two hundred three".