231664466 has 16 divisors (see below), whose sum is σ = 380606688. Its totient is φ = 104880000.

The previous prime is 231664463. The next prime is 231664471. The reversal of 231664466 is 664466132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (231664463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15455 + ... + 26498.

It is an arithmetic number, because the mean of its divisors is an integer number (23787918).

Almost surely, 2^231664466 is an apocalyptic number.

231664466 is a deficient number, since it is larger than the sum of its proper divisors (148942222).

231664466 is a wasteful number, since it uses less digits than its factorization.

231664466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42217.

The product of its digits is 124416, while the sum is 38.

The square root of 231664466 is about 15220.5277832275. The cubic root of 231664466 is about 614.1669961363.

The spelling of 231664466 in words is "two hundred thirty-one million, six hundred sixty-four thousand, four hundred sixty-six".