214518329 has 4 divisors (see below), whose sum is σ = 215070180. Its totient is φ = 213966480.

The previous prime is 214518319. The next prime is 214518331. The reversal of 214518329 is 923815412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 130759225 + 83759104 = 11435^2 + 9152^2 .

It is a cyclic number.

It is not a de Polignac number, because 214518329 - 2¹⁶ = 214452793 is a prime.

It is a super-2 number, since 2×214518329² = 92036226953904482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214518319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275342 + ... + 276119.

It is an arithmetic number, because the mean of its divisors is an integer number (53767545).

Almost surely, 2^214518329 is an apocalyptic number.

It is an amenable number.

214518329 is a deficient number, since it is larger than the sum of its proper divisors (551851).

214518329 is an equidigital number, since it uses as much as digits as its factorization.

214518329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551850.

The product of its digits is 17280, while the sum is 35.

The square root of 214518329 is about 14646.4442442526. Note that the first 3 decimals coincide. The cubic root of 214518329 is about 598.6249334682.

The spelling of 214518329 in words is "two hundred fourteen million, five hundred eighteen thousand, three hundred twenty-nine".