20130220420311 has 4 divisors (see below), whose sum is σ = 26840293893752. Its totient is φ = 13420146946872.

The previous prime is 20130220420307. The next prime is 20130220420361. The reversal of 20130220420311 is 11302402203102.

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

It is not a de Polignac number, because 20130220420311 - 2² = 20130220420307 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 (20130220420361) 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, 3355036736716 + ... + 3355036736721.

It is an arithmetic number, because the mean of its divisors is an integer number (6710073473438).

Almost surely, 2^{20130220420311} is an apocalyptic number.

20130220420311 is a deficient number, since it is larger than the sum of its proper divisors (6710073473441).

20130220420311 is an equidigital number, since it uses as much as digits as its factorization.

20130220420311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710073473440.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20130220420311 its reverse (11302402203102), we get a palindrome (31432622623413).

The spelling of 20130220420311 in words is "twenty trillion, one hundred thirty billion, two hundred twenty million, four hundred twenty thousand, three hundred eleven".