213111313311 has 16 divisors (see below), whose sum is σ = 306060379520. Its totient is φ = 131122113120.

The previous prime is 213111313291. The next prime is 213111313321. The reversal of 213111313311 is 113313111312.

It is not a de Polignac number, because 213111313311 - 2¹⁴ = 213111296927 is a prime.

It is a super-2 number, since 2×213111313311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111313321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262105 + ... + 703506.

It is an arithmetic number, because the mean of its divisors is an integer number (19128773720).

Almost surely, 2^213111313311 is an apocalyptic number.

213111313311 is a deficient number, since it is larger than the sum of its proper divisors (92949066209).

213111313311 is a wasteful number, since it uses less digits than its factorization.

213111313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971286.

The product of its digits is 162, while the sum is 21.

Adding to 213111313311 its reverse (113313111312), we get a palindrome (326424424623).

The spelling of 213111313311 in words is "two hundred thirteen billion, one hundred eleven million, three hundred thirteen thousand, three hundred eleven".