231663995329912 has 32 divisors (see below), whose sum is σ = 460968823735200. Its totient is φ = 108770017342464.

The previous prime is 231663995329891. The next prime is 231663995329993. The reversal of 231663995329912 is 219923599366132.

231663995329912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1940044773 + ... + 1940164180.

It is an arithmetic number, because the mean of its divisors is an integer number (14405275741725).

Almost surely, 2^{231663995329912} is an apocalyptic number.

It is an amenable number.

231663995329912 is a deficient number, since it is larger than the sum of its proper divisors (229304828405288).

231663995329912 is a wasteful number, since it uses less digits than its factorization.

231663995329912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880209415 (or 3880209411 counting only the distinct ones).

The product of its digits is 255091680, while the sum is 70.

The spelling of 231663995329912 in words is "two hundred thirty-one trillion, six hundred sixty-three billion, nine hundred ninety-five million, three hundred twenty-nine thousand, nine hundred twelve".