231432351111 has 24 divisors (see below), whose sum is σ = 363308705760. Its totient is φ = 141113295936.

The previous prime is 231432351047. The next prime is 231432351149. The reversal of 231432351111 is 111153234132.

231432351111 is a `hidden beast` number, since 2 + 3 + 143 + 2 + 3 + 511 + 1 + 1 = 666.

It is not a de Polignac number, because 231432351111 - 2⁶ = 231432351047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231432311111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9060891 + ... + 9086396.

It is an arithmetic number, because the mean of its divisors is an integer number (15137862740).

Almost surely, 2^231432351111 is an apocalyptic number.

231432351111 is a deficient number, since it is larger than the sum of its proper divisors (131876354649).

231432351111 is a wasteful number, since it uses less digits than its factorization.

231432351111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18147415 (or 18147412 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

Adding to 231432351111 its reverse (111153234132), we get a palindrome (342585585243).

The spelling of 231432351111 in words is "two hundred thirty-one billion, four hundred thirty-two million, three hundred fifty-one thousand, one hundred eleven".