166000331 has 8 divisors (see below), whose sum is σ = 189806304. Its totient is φ = 142217280.

The previous prime is 166000313. The next prime is 166000357. The reversal of 166000331 is 133000661.

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 166000331 - 2¹⁴ = 165983947 is a prime.

It is a super-2 number, since 2×166000331² = 55112219784219122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166000301) 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, 14621 + ... + 23361.

It is an arithmetic number, because the mean of its divisors is an integer number (23725788).

Almost surely, 2^166000331 is an apocalyptic number.

166000331 is a deficient number, since it is larger than the sum of its proper divisors (23805973).

166000331 is an equidigital number, since it uses as much as digits as its factorization.

166000331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11461.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 166000331 is about 12884.1115720099. Note that the first 3 decimals coincide. The cubic root of 166000331 is about 549.5868312966.

Adding to 166000331 its reverse (133000661), we get a palindrome (299000992).

The spelling of 166000331 in words is "one hundred sixty-six million, three hundred thirty-one", and thus it is an aban number.