213116213 has 8 divisors (see below), whose sum is σ = 221330208. Its totient is φ = 205050384.

The previous prime is 213116209. The next prime is 213116221. The reversal of 213116213 is 312611312.

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 213116213 - 2² = 213116209 is a prime.

It is a super-2 number, since 2×213116213² = 90837040486922738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213116203) 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, 34106 + ... + 39867.

It is an arithmetic number, because the mean of its divisors is an integer number (27666276).

Almost surely, 2^213116213 is an apocalyptic number.

It is an amenable number.

213116213 is a deficient number, since it is larger than the sum of its proper divisors (8213995).

213116213 is an equidigital number, since it uses as much as digits as its factorization.

213116213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74083.

The product of its digits is 216, while the sum is 20.

The square root of 213116213 is about 14598.5003681885. The cubic root of 213116213 is about 597.3178548803.

Adding to 213116213 its reverse (312611312), we get a palindrome (525727525).

The spelling of 213116213 in words is "two hundred thirteen million, one hundred sixteen thousand, two hundred thirteen".