20315443344311 has 4 divisors (see below), whose sum is σ = 20402634088512. Its totient is φ = 20228252600112.

The previous prime is 20315443344299. The next prime is 20315443344341. The reversal of 20315443344311 is 11344334451302.

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 20315443344311 - 2²⁶ = 20315376235447 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 (20315443344341) 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, 43595371751 + ... + 43595372216.

It is an arithmetic number, because the mean of its divisors is an integer number (5100658522128).

Almost surely, 2^{20315443344311} is an apocalyptic number.

20315443344311 is a deficient number, since it is larger than the sum of its proper divisors (87190744201).

20315443344311 is an equidigital number, since it uses as much as digits as its factorization.

20315443344311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87190744200.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 20315443344311 its reverse (11344334451302), we get a palindrome (31659777795613).

The spelling of 20315443344311 in words is "twenty trillion, three hundred fifteen billion, four hundred forty-three million, three hundred forty-four thousand, three hundred eleven".