231685993766 has 8 divisors (see below), whose sum is σ = 347570452440. Its totient is φ = 115829176288.

The previous prime is 231685993753. The next prime is 231685993783. The reversal of 231685993766 is 667399586132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6889331 + ... + 6922878.

It is an arithmetic number, because the mean of its divisors is an integer number (43446306555).

Almost surely, 2^231685993766 is an apocalyptic number.

231685993766 is a deficient number, since it is larger than the sum of its proper divisors (115884458674).

231685993766 is a wasteful number, since it uses less digits than its factorization.

231685993766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13820598.

The product of its digits is 88179840, while the sum is 65.

The spelling of 231685993766 in words is "two hundred thirty-one billion, six hundred eighty-five million, nine hundred ninety-three thousand, seven hundred sixty-six".