166065031 has 8 divisors (see below), whose sum is σ = 183456000. Its totient is φ = 149056440.

The previous prime is 166065007. The next prime is 166065079. The reversal of 166065031 is 130560661.

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 166065031 - 2¹⁷ = 165933959 is a prime.

It is a super-2 number, since 2×166065031² = 55155189042061922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166065091) 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, 94681 + ... + 96418.

It is an arithmetic number, because the mean of its divisors is an integer number (22932000).

Almost surely, 2^166065031 is an apocalyptic number.

166065031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166065031 is a deficient number, since it is larger than the sum of its proper divisors (17390969).

166065031 is a wasteful number, since it uses less digits than its factorization.

166065031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191189.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 166065031 is about 12886.6221718494. The cubic root of 166065031 is about 549.6582240243.

The spelling of 166065031 in words is "one hundred sixty-six million, sixty-five thousand, thirty-one".