20311322013111 has 64 divisors (see below), whose sum is σ = 28488116275200. Its totient is φ = 12857139486720.

The previous prime is 20311322013109. The next prime is 20311322013137. The reversal of 20311322013111 is 11131022311302.

It is not a de Polignac number, because 20311322013111 - 2¹ = 20311322013109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311322013611) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2922909465 + ... + 2922916413.

It is an arithmetic number, because the mean of its divisors is an integer number (445126816800).

Almost surely, 2^{20311322013111} is an apocalyptic number.

20311322013111 is a deficient number, since it is larger than the sum of its proper divisors (8176794262089).

20311322013111 is a wasteful number, since it uses less digits than its factorization.

20311322013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8584.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 20311322013111 its reverse (11131022311302), we get a palindrome (31442344324413).

The spelling of 20311322013111 in words is "twenty trillion, three hundred eleven billion, three hundred twenty-two million, thirteen thousand, one hundred eleven".