213311021311 has 4 divisors (see below), whose sum is σ = 220666573800. Its totient is φ = 205955468824.

The previous prime is 213311021299. The next prime is 213311021327. The reversal of 213311021311 is 113120113312.

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

It is a cyclic number.

It is not a de Polignac number, because 213311021311 - 2¹⁵ = 213310988543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213311021711) 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, 3677776201 + ... + 3677776258.

It is an arithmetic number, because the mean of its divisors is an integer number (55166643450).

Almost surely, 2^213311021311 is an apocalyptic number.

213311021311 is a deficient number, since it is larger than the sum of its proper divisors (7355552489).

213311021311 is an equidigital number, since it uses as much as digits as its factorization.

213311021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7355552488.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 213311021311 its reverse (113120113312), we get a palindrome (326431134623).

The spelling of 213311021311 in words is "two hundred thirteen billion, three hundred eleven million, twenty-one thousand, three hundred eleven".