20311004111 has 8 divisors (see below), whose sum is σ = 21105051648. Its totient is φ = 19525635000.

The previous prime is 20311004107. The next prime is 20311004143. The reversal of 20311004111 is 11140011302.

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

It is a cyclic number.

It is not a de Polignac number, because 20311004111 - 2² = 20311004107 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 (20311004011) 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, 2164835 + ... + 2174196.

It is an arithmetic number, because the mean of its divisors is an integer number (2638131456).

Almost surely, 2^20311004111 is an apocalyptic number.

20311004111 is a deficient number, since it is larger than the sum of its proper divisors (794047537).

20311004111 is a wasteful number, since it uses less digits than its factorization.

20311004111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339213.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20311004111 its reverse (11140011302), we get a palindrome (31451015413).

The spelling of 20311004111 in words is "twenty billion, three hundred eleven million, four thousand, one hundred eleven".