213540211 has 8 divisors (see below), whose sum is σ = 222976800. Its totient is φ = 204116352.

The previous prime is 213540203. The next prime is 213540251. The reversal of 213540211 is 112045312.

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

It is not a de Polignac number, because 213540211 - 2³ = 213540203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213540251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50715 + ... + 54763.

It is an arithmetic number, because the mean of its divisors is an integer number (27872100).

Almost surely, 2^213540211 is an apocalyptic number.

213540211 is a deficient number, since it is larger than the sum of its proper divisors (9436589).

213540211 is a wasteful number, since it uses less digits than its factorization.

213540211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6365.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 213540211 is about 14613.0151235123. The cubic root of 213540211 is about 597.7137168402.

Adding to 213540211 its reverse (112045312), we get a palindrome (325585523).

The spelling of 213540211 in words is "two hundred thirteen million, five hundred forty thousand, two hundred eleven".