166431113 has 8 divisors (see below), whose sum is σ = 170705568. Its totient is φ = 162175104.

The previous prime is 166431101. The next prime is 166431121. The reversal of 166431113 is 311134661.

166431113 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 cyclic number.

It is not a de Polignac number, because 166431113 - 2⁶ = 166431049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166431413) 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, 14681 + ... + 23417.

It is an arithmetic number, because the mean of its divisors is an integer number (21338196).

Almost surely, 2^166431113 is an apocalyptic number.

It is an amenable number.

166431113 is a deficient number, since it is larger than the sum of its proper divisors (4274455).

166431113 is an equidigital number, since it uses as much as digits as its factorization.

166431113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9223.

The product of its digits is 1296, while the sum is 26.

The square root of 166431113 is about 12900.8183073788. The cubic root of 166431113 is about 550.0618255568.

Adding to 166431113 its reverse (311134661), we get a palindrome (477565774).

The spelling of 166431113 in words is "one hundred sixty-six million, four hundred thirty-one thousand, one hundred thirteen".