231113022111 has 12 divisors (see below), whose sum is σ = 351399916920. Its totient is φ = 145966119120.

The previous prime is 231113022103. The next prime is 231113022137. The reversal of 231113022111 is 111220311132.

231113022111 is a `hidden beast` number, since 2 + 311 + 130 + 221 + 1 + 1 = 666.

It is not a de Polignac number, because 231113022111 - 2³ = 231113022103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231113022181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675768900 + ... + 675769241.

It is an arithmetic number, because the mean of its divisors is an integer number (29283326410).

Almost surely, 2^231113022111 is an apocalyptic number.

231113022111 is a deficient number, since it is larger than the sum of its proper divisors (120286894809).

231113022111 is a wasteful number, since it uses less digits than its factorization.

231113022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351538166 (or 1351538163 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 231113022111 its reverse (111220311132), we get a palindrome (342333333243).

The spelling of 231113022111 in words is "two hundred thirty-one billion, one hundred thirteen million, twenty-two thousand, one hundred eleven".