231666132 has 12 divisors (see below), whose sum is σ = 540554336. Its totient is φ = 77222040.

The previous prime is 231666119. The next prime is 231666133.

231666132 is nontrivially palindromic in base 10.

231666132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 231666132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231666133) 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 3 ways as a sum of consecutive naturals, for example, 9652744 + ... + 9652767.

Almost surely, 2^231666132 is an apocalyptic number.

It is an amenable number.

231666132 is an abundant number, since it is smaller than the sum of its proper divisors (308888204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231666132 is a wasteful number, since it uses less digits than its factorization.

231666132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19305518 (or 19305516 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 231666132 is about 15220.5825118489. The cubic root of 231666132 is about 614.1684683801.

The spelling of 231666132 in words is "two hundred thirty-one million, six hundred sixty-six thousand, one hundred thirty-two".