331666306 has 8 divisors (see below), whose sum is σ = 498539520. Its totient is φ = 165486468.

The previous prime is 331666297. The next prime is 331666319. The reversal of 331666306 is 603666133.

331666306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×331666306² = 220005077071371272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172146 + ... + 174061.

It is an arithmetic number, because the mean of its divisors is an integer number (62317440).

Almost surely, 2^331666306 is an apocalyptic number.

331666306 is a deficient number, since it is larger than the sum of its proper divisors (166873214).

331666306 is a wasteful number, since it uses less digits than its factorization.

331666306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346688.

The product of its (nonzero) digits is 34992, while the sum is 34.

The square root of 331666306 is about 18211.7079374780. The cubic root of 331666306 is about 692.2034899458.

The spelling of 331666306 in words is "three hundred thirty-one million, six hundred sixty-six thousand, three hundred six".