213101011311 has 4 divisors (see below), whose sum is σ = 284134681752. Its totient is φ = 142067340872.

The previous prime is 213101011283. The next prime is 213101011369. The reversal of 213101011311 is 113110101312.

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 213101011311 - 2³⁴ = 195921142127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213101011381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35516835216 + ... + 35516835221.

It is an arithmetic number, because the mean of its divisors is an integer number (71033670438).

Almost surely, 2^213101011311 is an apocalyptic number.

213101011311 is a deficient number, since it is larger than the sum of its proper divisors (71033670441).

213101011311 is an equidigital number, since it uses as much as digits as its factorization.

213101011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71033670440.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 213101011311 its reverse (113110101312), we get a palindrome (326211112623).

Subtracting from 213101011311 its reverse (113110101312), we obtain a palindrome (99990909999).

The spelling of 213101011311 in words is "two hundred thirteen billion, one hundred one million, eleven thousand, three hundred eleven".