231666673 has 8 divisors (see below), whose sum is σ = 267333248. Its totient is φ = 196642944.

The previous prime is 231666653. The next prime is 231666697. The reversal of 231666673 is 376666132.

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

It is a cyclic number.

It is not a de Polignac number, because 231666673 - 2²¹ = 229569521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231666613) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 159936 + ... + 161377.

It is an arithmetic number, because the mean of its divisors is an integer number (33416656).

Almost surely, 2^231666673 is an apocalyptic number.

It is an amenable number.

231666673 is a deficient number, since it is larger than the sum of its proper divisors (35666575).

231666673 is a wasteful number, since it uses less digits than its factorization.

231666673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321423.

The product of its digits is 163296, while the sum is 40.

The square root of 231666673 is about 15220.6002838259. The cubic root of 231666673 is about 614.1689464602.

The spelling of 231666673 in words is "two hundred thirty-one million, six hundred sixty-six thousand, six hundred seventy-three".