20302311111 has 8 divisors (see below), whose sum is σ = 27071184000. Its totient is φ = 13534156152.

The previous prime is 20302311109. The next prime is 20302311221. The reversal of 20302311111 is 11111320302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20302311111 - 2¹ = 20302311109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302311011) 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 7 ways as a sum of consecutive naturals, for example, 109611 + ... + 229388.

It is an arithmetic number, because the mean of its divisors is an integer number (3383898000).

Almost surely, 2^20302311111 is an apocalyptic number.

20302311111 is a deficient number, since it is larger than the sum of its proper divisors (6768872889).

20302311111 is a wasteful number, since it uses less digits than its factorization.

20302311111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358965.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20302311111 its reverse (11111320302), we get a palindrome (31413631413).

The spelling of 20302311111 in words is "twenty billion, three hundred two million, three hundred eleven thousand, one hundred eleven".