231233031211 has 16 divisors (see below), whose sum is σ = 284610110400. Its totient is φ = 182943571968.

The previous prime is 231233031191. The next prime is 231233031217. The reversal of 231233031211 is 112130332132.

It is a cyclic number.

It is not a de Polignac number, because 231233031211 - 2⁷ = 231233031083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231233031217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1903875 + ... + 2021683.

It is an arithmetic number, because the mean of its divisors is an integer number (17788131900).

Almost surely, 2^231233031211 is an apocalyptic number.

231233031211 is a deficient number, since it is larger than the sum of its proper divisors (53377079189).

231233031211 is a wasteful number, since it uses less digits than its factorization.

231233031211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139398.

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

Adding to 231233031211 its reverse (112130332132), we get a palindrome (343363363343).

The spelling of 231233031211 in words is "two hundred thirty-one billion, two hundred thirty-three million, thirty-one thousand, two hundred eleven".