231241111 has 4 divisors (see below), whose sum is σ = 231616512. Its totient is φ = 230865712.

The previous prime is 231241093. The next prime is 231241117. The reversal of 231241111 is 111142132.

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 231241111 - 2⁵ = 231241079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231241117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186775 + ... + 188008.

It is an arithmetic number, because the mean of its divisors is an integer number (57904128).

Almost surely, 2^231241111 is an apocalyptic number.

231241111 is a deficient number, since it is larger than the sum of its proper divisors (375401).

231241111 is an equidigital number, since it uses as much as digits as its factorization.

231241111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375400.

The product of its digits is 48, while the sum is 16.

The square root of 231241111 is about 15206.6140544172. The cubic root of 231241111 is about 613.7926483859.

Adding to 231241111 its reverse (111142132), we get a palindrome (342383243).

The spelling of 231241111 in words is "two hundred thirty-one million, two hundred forty-one thousand, one hundred eleven".