166004331 has 8 divisors (see below), whose sum is σ = 222562704. Its totient is φ = 110057760.

The previous prime is 166004309. The next prime is 166004339. The reversal of 166004331 is 133400661.

166004331 is digitally balanced in base 2, 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 de Polignac number, because none of the positive numbers 2^k-166004331 is a prime.

It is a super-3 number, since 3×166004331³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (166004339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152316 + ... + 153401.

It is an arithmetic number, because the mean of its divisors is an integer number (27820338).

Almost surely, 2^166004331 is an apocalyptic number.

166004331 is a deficient number, since it is larger than the sum of its proper divisors (56558373).

166004331 is a wasteful number, since it uses less digits than its factorization.

166004331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305901.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 166004331 is about 12884.2668010252. The cubic root of 166004331 is about 549.5912456044.

Adding to 166004331 its reverse (133400661), we get a palindrome (299404992).

The spelling of 166004331 in words is "one hundred sixty-six million, four thousand, three hundred thirty-one".