231609651166 has 8 divisors (see below), whose sum is σ = 347877081504. Its totient is φ = 115650624000.

The previous prime is 231609651157. The next prime is 231609651167. The reversal of 231609651166 is 661156906132.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231609651167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77098915 + ... + 77101918.

It is an arithmetic number, because the mean of its divisors is an integer number (43484635188).

Almost surely, 2^231609651166 is an apocalyptic number.

231609651166 is a deficient number, since it is larger than the sum of its proper divisors (116267430338).

231609651166 is a wasteful number, since it uses less digits than its factorization.

231609651166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154201586.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 231609651166 in words is "two hundred thirty-one billion, six hundred nine million, six hundred fifty-one thousand, one hundred sixty-six".