20003011311 has 16 divisors (see below), whose sum is σ = 28141120640. Its totient is φ = 12603457440.

The previous prime is 20003011307. The next prime is 20003011313. The reversal of 20003011311 is 11311030002.

It is not a de Polignac number, because 20003011311 - 2² = 20003011307 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 (20003011313) 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, 392785 + ... + 440778.

It is an arithmetic number, because the mean of its divisors is an integer number (1758820040).

Almost surely, 2^20003011311 is an apocalyptic number.

20003011311 is a deficient number, since it is larger than the sum of its proper divisors (8138109329).

20003011311 is a wasteful number, since it uses less digits than its factorization.

20003011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834006.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 20003011311 its reverse (11311030002), we get a palindrome (31314041313).

The spelling of 20003011311 in words is "twenty billion, three million, eleven thousand, three hundred eleven".