231641746785 has 128 divisors (see below), whose sum is σ = 462454686720. Its totient is φ = 109394841600.

The previous prime is 231641746747. The next prime is 231641746799. The reversal of 231641746785 is 587647146132.

231641746785 is a `hidden beast` number, since 2 + 3 + 164 + 17 + 467 + 8 + 5 = 666.

It is not a de Polignac number, because 231641746785 - 2⁷ = 231641746657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3183915 + ... + 3255855.

It is an arithmetic number, because the mean of its divisors is an integer number (3612927240).

Almost surely, 2^231641746785 is an apocalyptic number.

It is an amenable number.

231641746785 is a deficient number, since it is larger than the sum of its proper divisors (230812939935).

231641746785 is a wasteful number, since it uses less digits than its factorization.

231641746785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72056 (or 72050 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 231641746785 in words is "two hundred thirty-one billion, six hundred forty-one million, seven hundred forty-six thousand, seven hundred eighty-five".