20311310011 has 4 divisors (see below), whose sum is σ = 20312857224. Its totient is φ = 20309762800.

The previous prime is 20311310009. The next prime is 20311310059. The reversal of 20311310011 is 11001311302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11001311302 = 2 ⋅5500655651.

It is a cyclic number.

It is not a de Polignac number, because 20311310011 - 2¹ = 20311310009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311309973 and 20311310000.

It is not an unprimeable number, because it can be changed into a prime (20311310311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753745 + ... + 780226.

It is an arithmetic number, because the mean of its divisors is an integer number (5078214306).

Almost surely, 2^20311310011 is an apocalyptic number.

20311310011 is a deficient number, since it is larger than the sum of its proper divisors (1547213).

20311310011 is a wasteful number, since it uses less digits than its factorization.

20311310011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547212.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 20311310011 its reverse (11001311302), we get a palindrome (31312621313).

The spelling of 20311310011 in words is "twenty billion, three hundred eleven million, three hundred ten thousand, eleven".