20013320311 has 4 divisors (see below), whose sum is σ = 20013777432. Its totient is φ = 20012863192.

The previous prime is 20013320281. The next prime is 20013320317. The reversal of 20013320311 is 11302331002.

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 20013320311 - 2¹⁵ = 20013287543 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 (20013320317) 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, 154996 + ... + 253081.

It is an arithmetic number, because the mean of its divisors is an integer number (5003444358).

Almost surely, 2^20013320311 is an apocalyptic number.

20013320311 is a deficient number, since it is larger than the sum of its proper divisors (457121).

20013320311 is an equidigital number, since it uses as much as digits as its factorization.

20013320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457120.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20013320311 its reverse (11302331002), we get a palindrome (31315651313).

The spelling of 20013320311 in words is "twenty billion, thirteen million, three hundred twenty thousand, three hundred eleven".