231321111203 has 32 divisors (see below), whose sum is σ = 285523047936. Its totient is φ = 182496872448.

The previous prime is 231321111187. The next prime is 231321111223. The reversal of 231321111203 is 302111123132.

It is a happy number.

231321111203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231321111203 - 2⁴ = 231321111187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231321111223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58963400 + ... + 58967322.

It is an arithmetic number, because the mean of its divisors is an integer number (8922595248).

Almost surely, 2^231321111203 is an apocalyptic number.

231321111203 is a deficient number, since it is larger than the sum of its proper divisors (54201936733).

231321111203 is a wasteful number, since it uses less digits than its factorization.

231321111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231321111203 its reverse (302111123132), we get a palindrome (533432234335).

The spelling of 231321111203 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred eleven thousand, two hundred three".