20311313011 has 12 divisors (see below), whose sum is σ = 22332773736. Its totient is φ = 18458945120.

The previous prime is 20311313003. The next prime is 20311313047. The reversal of 20311313011 is 11031311302.

It is not a de Polignac number, because 20311313011 - 2³ = 20311313003 is a prime.

It is a super-2 number, since 2×20311313011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311313051) 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 11 ways as a sum of consecutive naturals, for example, 379911 + ... + 430063.

It is an arithmetic number, because the mean of its divisors is an integer number (1861064478).

Almost surely, 2^20311313011 is an apocalyptic number.

20311313011 is a deficient number, since it is larger than the sum of its proper divisors (2021460725).

20311313011 is a wasteful number, since it uses less digits than its factorization.

20311313011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53522 (or 53511 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 20311313011 its reverse (11031311302), we get a palindrome (31342624313).

The spelling of 20311313011 in words is "twenty billion, three hundred eleven million, three hundred thirteen thousand, eleven".