231420324111 has 4 divisors (see below), whose sum is σ = 308560432152. Its totient is φ = 154280216072.

The previous prime is 231420324053. The next prime is 231420324127. The reversal of 231420324111 is 111423024132.

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 231420324111 - 2¹⁰ = 231420323087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231420724111) 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, 38570054016 + ... + 38570054021.

It is an arithmetic number, because the mean of its divisors is an integer number (77140108038).

Almost surely, 2^231420324111 is an apocalyptic number.

231420324111 is a deficient number, since it is larger than the sum of its proper divisors (77140108041).

231420324111 is an equidigital number, since it uses as much as digits as its factorization.

231420324111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77140108040.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 231420324111 its reverse (111423024132), we get a palindrome (342843348243).

The spelling of 231420324111 in words is "two hundred thirty-one billion, four hundred twenty million, three hundred twenty-four thousand, one hundred eleven".