20311044005 has 16 divisors (see below), whose sum is σ = 27910992000. Its totient is φ = 13899650112.

The previous prime is 20311044001. The next prime is 20311044011. The reversal of 20311044005 is 50044011302.

It is a cyclic number.

It is not a de Polignac number, because 20311044005 - 2² = 20311044001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311044001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564014 + ... + 598943.

It is an arithmetic number, because the mean of its divisors is an integer number (1744437000).

Almost surely, 2^20311044005 is an apocalyptic number.

It is an amenable number.

20311044005 is a deficient number, since it is larger than the sum of its proper divisors (7599947995).

20311044005 is a wasteful number, since it uses less digits than its factorization.

20311044005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163468.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20311044005 its reverse (50044011302), we get a palindrome (70355055307).

The spelling of 20311044005 in words is "twenty billion, three hundred eleven million, forty-four thousand, five".