231230213110111 has 4 divisors (see below), whose sum is σ = 231795568154800. Its totient is φ = 230664858065424.

The previous prime is 231230213110069. The next prime is 231230213110163. The reversal of 231230213110111 is 111011312032132.

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 231230213110111 - 2³¹ = 231228065626463 is a prime.

It is a super-2 number, since 2×231230213110111² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231230213114111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282677521731 + ... + 282677522548.

It is an arithmetic number, because the mean of its divisors is an integer number (57948892038700).

Almost surely, 2^{231230213110111} is an apocalyptic number.

231230213110111 is a deficient number, since it is larger than the sum of its proper divisors (565355044689).

231230213110111 is an equidigital number, since it uses as much as digits as its factorization.

231230213110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565355044688.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 231230213110111 its reverse (111011312032132), we get a palindrome (342241525142243).

The spelling of 231230213110111 in words is "two hundred thirty-one trillion, two hundred thirty billion, two hundred thirteen million, one hundred ten thousand, one hundred eleven".