20213201311 has 4 divisors (see below), whose sum is σ = 20643269472. Its totient is φ = 19783133152.

The previous prime is 20213201299. The next prime is 20213201339. The reversal of 20213201311 is 11310231202.

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 20213201311 - 2⁵ = 20213201279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213201341) 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, 215034010 + ... + 215034103.

It is an arithmetic number, because the mean of its divisors is an integer number (5160817368).

Almost surely, 2^20213201311 is an apocalyptic number.

20213201311 is a deficient number, since it is larger than the sum of its proper divisors (430068161).

20213201311 is an equidigital number, since it uses as much as digits as its factorization.

20213201311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430068160.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20213201311 its reverse (11310231202), we get a palindrome (31523432513).

The spelling of 20213201311 in words is "twenty billion, two hundred thirteen million, two hundred one thousand, three hundred eleven".