231643229111 has 6 divisors (see below), whose sum is σ = 269462531880. Its totient is φ = 198551339196.

The previous prime is 231643229107. The next prime is 231643229149. The reversal of 231643229111 is 111922346132.

It is a happy number.

It is not a de Polignac number, because 231643229111 - 2² = 231643229107 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 (231643249111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2363706371 + ... + 2363706468.

It is an arithmetic number, because the mean of its divisors is an integer number (44910421980).

Almost surely, 2^231643229111 is an apocalyptic number.

231643229111 is a deficient number, since it is larger than the sum of its proper divisors (37819302769).

231643229111 is an equidigital number, since it uses as much as digits as its factorization.

231643229111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4727412853 (or 4727412846 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The spelling of 231643229111 in words is "two hundred thirty-one billion, six hundred forty-three million, two hundred twenty-nine thousand, one hundred eleven".