211311032213 has 4 divisors (see below), whose sum is σ = 211916508300. Its totient is φ = 210705556128.

The previous prime is 211311032173. The next prime is 211311032237. The reversal of 211311032213 is 312230113112.

It is a happy number.

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 64837964689 + 146473067524 = 254633^2 + 382718^2 .

It is a cyclic number.

It is not a de Polignac number, because 211311032213 - 2¹⁴ = 211311015829 is a prime.

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 (211311032293) 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, 302737520 + ... + 302738217.

It is an arithmetic number, because the mean of its divisors is an integer number (52979127075).

Almost surely, 2^211311032213 is an apocalyptic number.

It is an amenable number.

211311032213 is a deficient number, since it is larger than the sum of its proper divisors (605476087).

211311032213 is an equidigital number, since it uses as much as digits as its factorization.

211311032213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605476086.

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

Adding to 211311032213 its reverse (312230113112), we get a palindrome (523541145325).

The spelling of 211311032213 in words is "two hundred eleven billion, three hundred eleven million, thirty-two thousand, two hundred thirteen".