231440141111 has 16 divisors (see below), whose sum is σ = 235067204736. Its totient is φ = 227843982816.

The previous prime is 231440141089. The next prime is 231440141117. The reversal of 231440141111 is 111141044132.

It is a cyclic number.

It is not a de Polignac number, because 231440141111 - 2³⁰ = 230366399287 is a prime.

It is a super-3 number, since 3×231440141111³ (a number of 35 digits) contains 333 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 (231440141117) 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, 13520420 + ... + 13537526.

It is an arithmetic number, because the mean of its divisors is an integer number (14691700296).

Almost surely, 2^231440141111 is an apocalyptic number.

231440141111 is a deficient number, since it is larger than the sum of its proper divisors (3627063625).

231440141111 is a wasteful number, since it uses less digits than its factorization.

231440141111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17998.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 231440141111 its reverse (111141044132), we get a palindrome (342581185243).

The spelling of 231440141111 in words is "two hundred thirty-one billion, four hundred forty million, one hundred forty-one thousand, one hundred eleven".