231123313211 has 16 divisors (see below), whose sum is σ = 266088345600. Its totient is φ = 196645641408.

The previous prime is 231123313207. The next prime is 231123313217. The reversal of 231123313211 is 112313321132.

It is a cyclic number.

It is not a de Polignac number, because 231123313211 - 2² = 231123313207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231123313217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6519911 + ... + 6555263.

It is an arithmetic number, because the mean of its divisors is an integer number (16630521600).

Almost surely, 2^231123313211 is an apocalyptic number.

231123313211 is a deficient number, since it is larger than the sum of its proper divisors (34965032389).

231123313211 is a wasteful number, since it uses less digits than its factorization.

231123313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42218.

The product of its digits is 648, while the sum is 23.

Adding to 231123313211 its reverse (112313321132), we get a palindrome (343436634343).

The spelling of 231123313211 in words is "two hundred thirty-one billion, one hundred twenty-three million, three hundred thirteen thousand, two hundred eleven".