231231103112 has 8 divisors (see below), whose sum is σ = 433558318350. Its totient is φ = 115615551552.

The previous prime is 231231103111. The next prime is 231231103139. The reversal of 231231103112 is 211301132132.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 174869494276 + 56361608836 = 418174^2 + 237406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (231231103111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14451943937 + ... + 14451943952.

Almost surely, 2^231231103112 is an apocalyptic number.

It is an amenable number.

231231103112 is a deficient number, since it is larger than the sum of its proper divisors (202327215238).

231231103112 is a wasteful number, since it uses less digits than its factorization.

231231103112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28903887895 (or 28903887891 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231231103112 its reverse (211301132132), we get a palindrome (442532235244).

The spelling of 231231103112 in words is "two hundred thirty-one billion, two hundred thirty-one million, one hundred three thousand, one hundred twelve".