166227231 has 8 divisors (see below), whose sum is σ = 223124400. Its totient is φ = 110074112.

The previous prime is 166227209. The next prime is 166227253. The reversal of 166227231 is 132722661.

It is an interprime number because it is at equal distance from previous prime (166227209) and next prime (166227253).

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 166227231 - 2⁶ = 166227167 is a prime.

It is a super-2 number, since 2×166227231² = 55262984651854722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166227331) 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, 185490 + ... + 186383.

It is an arithmetic number, because the mean of its divisors is an integer number (27890550).

Almost surely, 2^166227231 is an apocalyptic number.

166227231 is a deficient number, since it is larger than the sum of its proper divisors (56897169).

166227231 is a wasteful number, since it uses less digits than its factorization.

166227231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372025.

The product of its digits is 6048, while the sum is 30.

The square root of 166227231 is about 12892.9139840457. The cubic root of 166227231 is about 549.8371209151.

Adding to 166227231 its reverse (132722661), we get a palindrome (298949892).

The spelling of 166227231 in words is "one hundred sixty-six million, two hundred twenty-seven thousand, two hundred thirty-one".