213211363 has 4 divisors (see below), whose sum is σ = 213256368. Its totient is φ = 213166360.

The previous prime is 213211267. The next prime is 213211373. The reversal of 213211363 is 363112312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213211363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213211373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14431 + ... + 25192.

It is an arithmetic number, because the mean of its divisors is an integer number (53314092).

Almost surely, 2^213211363 is an apocalyptic number.

213211363 is a deficient number, since it is larger than the sum of its proper divisors (45005).

213211363 is an equidigital number, since it uses as much as digits as its factorization.

213211363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45004.

The product of its digits is 648, while the sum is 22.

The square root of 213211363 is about 14601.7589008996. The cubic root of 213211363 is about 597.4067364922.

Adding to 213211363 its reverse (363112312), we get a palindrome (576323675).

The spelling of 213211363 in words is "two hundred thirteen million, two hundred eleven thousand, three hundred sixty-three".