166231443 has 32 divisors (see below), whose sum is σ = 257572864. Its totient is φ = 93405312.

The previous prime is 166231411. The next prime is 166231459. The reversal of 166231443 is 344132661.

It is not a de Polignac number, because 166231443 - 2⁵ = 166231411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166231443.

It is not an unprimeable number, because it can be changed into a prime (166231243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 418521 + ... + 418917.

It is an arithmetic number, because the mean of its divisors is an integer number (8049152).

Almost surely, 2^166231443 is an apocalyptic number.

166231443 is a deficient number, since it is larger than the sum of its proper divisors (91341421).

166231443 is a wasteful number, since it uses less digits than its factorization.

166231443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its digits is 10368, while the sum is 30.

The square root of 166231443 is about 12893.0773285512. The cubic root of 166231443 is about 549.8417649484.

The spelling of 166231443 in words is "one hundred sixty-six million, two hundred thirty-one thousand, four hundred forty-three".