166311107 has 4 divisors (see below), whose sum is σ = 166383000. Its totient is φ = 166239216.

The previous prime is 166311097. The next prime is 166311109. The reversal of 166311107 is 701113661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166311107 - 2¹⁶ = 166245571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166311109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32357 + ... + 37142.

It is an arithmetic number, because the mean of its divisors is an integer number (41595750).

Almost surely, 2^166311107 is an apocalyptic number.

166311107 is a deficient number, since it is larger than the sum of its proper divisors (71893).

166311107 is an equidigital number, since it uses as much as digits as its factorization.

166311107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71892.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 166311107 is about 12896.1663683437. The cubic root of 166311107 is about 549.9295854758.

Adding to 166311107 its reverse (701113661), we get a palindrome (867424768).

The spelling of 166311107 in words is "one hundred sixty-six million, three hundred eleven thousand, one hundred seven".