20000109311 has 16 divisors (see below), whose sum is σ = 24644472384. Its totient is φ = 15805649664.

The previous prime is 20000109299. The next prime is 20000109317. The reversal of 20000109311 is 11390100002.

It is a happy number.

It is not a de Polignac number, because 20000109311 - 2⁶ = 20000109247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20000109311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000109317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51206 + ... + 206451.

It is an arithmetic number, because the mean of its divisors is an integer number (1540279524).

Almost surely, 2^20000109311 is an apocalyptic number.

20000109311 is a deficient number, since it is larger than the sum of its proper divisors (4644363073).

20000109311 is a wasteful number, since it uses less digits than its factorization.

20000109311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258530.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 20000109311 its reverse (11390100002), we get a palindrome (31390209313).

The spelling of 20000109311 in words is "twenty billion, one hundred nine thousand, three hundred eleven".