231140352111 has 4 divisors (see below), whose sum is σ = 308187136152. Its totient is φ = 154093568072.

The previous prime is 231140352097. The next prime is 231140352143. The reversal of 231140352111 is 111253041132.

231140352111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231140352111 - 2¹³ = 231140343919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231140352181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38523392016 + ... + 38523392021.

It is an arithmetic number, because the mean of its divisors is an integer number (77046784038).

Almost surely, 2^231140352111 is an apocalyptic number.

231140352111 is a deficient number, since it is larger than the sum of its proper divisors (77046784041).

231140352111 is an equidigital number, since it uses as much as digits as its factorization.

231140352111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77046784040.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 231140352111 its reverse (111253041132), we get a palindrome (342393393243).

The spelling of 231140352111 in words is "two hundred thirty-one billion, one hundred forty million, three hundred fifty-two thousand, one hundred eleven".