213021034311 has 4 divisors (see below), whose sum is σ = 284028045752. Its totient is φ = 142014022872.

The previous prime is 213021034271. The next prime is 213021034319. The reversal of 213021034311 is 113430120312.

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

It is not a de Polignac number, because 213021034311 - 2⁷ = 213021034183 is a prime.

It is a super-2 number, since 2×213021034311² (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 (213021034319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35503505716 + ... + 35503505721.

It is an arithmetic number, because the mean of its divisors is an integer number (71007011438).

Almost surely, 2^213021034311 is an apocalyptic number.

213021034311 is a deficient number, since it is larger than the sum of its proper divisors (71007011441).

213021034311 is an equidigital number, since it uses as much as digits as its factorization.

213021034311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71007011440.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213021034311 its reverse (113430120312), we get a palindrome (326451154623).

The spelling of 213021034311 in words is "two hundred thirteen billion, twenty-one million, thirty-four thousand, three hundred eleven".