231313122111 has 16 divisors (see below), whose sum is σ = 316777500000. Its totient is φ = 150029388288.

The previous prime is 231313122091. The next prime is 231313122113. The reversal of 231313122111 is 111221313132.

It is not a de Polignac number, because 231313122111 - 2³⁵ = 196953383743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313122113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1508515 + ... + 1654763.

It is an arithmetic number, because the mean of its divisors is an integer number (19798593750).

Almost surely, 2^231313122111 is an apocalyptic number.

231313122111 is a deficient number, since it is larger than the sum of its proper divisors (85464377889).

231313122111 is a wasteful number, since it uses less digits than its factorization.

231313122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160538.

The product of its digits is 216, while the sum is 21.

Adding to 231313122111 its reverse (111221313132), we get a palindrome (342534435243).

The spelling of 231313122111 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred twenty-two thousand, one hundred eleven".