218232897 has 8 divisors (see below), whose sum is σ = 291061344. Its totient is φ = 145446528.

The previous prime is 218232887. The next prime is 218232941. The reversal of 218232897 is 798232812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 218232897 - 2¹⁴ = 218216513 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (218232827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4753 + ... + 21425.

It is an arithmetic number, because the mean of its divisors is an integer number (36382668).

Almost surely, 2^218232897 is an apocalyptic number.

It is an amenable number.

218232897 is a deficient number, since it is larger than the sum of its proper divisors (72828447).

218232897 is a wasteful number, since it uses less digits than its factorization.

218232897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21039.

The product of its digits is 96768, while the sum is 42.

The square root of 218232897 is about 14772.7078425047. The cubic root of 218232897 is about 602.0604136160.

The spelling of 218232897 in words is "two hundred eighteen million, two hundred thirty-two thousand, eight hundred ninety-seven".