20010023311 has 4 divisors (see below), whose sum is σ = 20033874000. Its totient is φ = 19986172624.

The previous prime is 20010023273. The next prime is 20010023329. The reversal of 20010023311 is 11332001002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20010023311 - 2²⁵ = 19976468879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010023291 and 20010023300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010023351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11924086 + ... + 11925763.

It is an arithmetic number, because the mean of its divisors is an integer number (5008468500).

Almost surely, 2^20010023311 is an apocalyptic number.

20010023311 is a deficient number, since it is larger than the sum of its proper divisors (23850689).

20010023311 is an equidigital number, since it uses as much as digits as its factorization.

20010023311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23850688.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20010023311 its reverse (11332001002), we get a palindrome (31342024313).

The spelling of 20010023311 in words is "twenty billion, ten million, twenty-three thousand, three hundred eleven".