231986133784 has 8 divisors (see below), whose sum is σ = 434974000860. Its totient is φ = 115993066888.

The previous prime is 231986133779. The next prime is 231986133791. The reversal of 231986133784 is 487331689132.

231986133784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14499133354 + ... + 14499133369.

Almost surely, 2^231986133784 is an apocalyptic number.

It is an amenable number.

231986133784 is a deficient number, since it is larger than the sum of its proper divisors (202987867076).

231986133784 is a wasteful number, since it uses less digits than its factorization.

231986133784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28998266729 (or 28998266725 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The spelling of 231986133784 in words is "two hundred thirty-one billion, nine hundred eighty-six million, one hundred thirty-three thousand, seven hundred eighty-four".