20311100013 has 16 divisors (see below), whose sum is σ = 29449483200. Its totient is φ = 12399780096.

The previous prime is 20311099973. The next prime is 20311100021. The reversal of 20311100013 is 31000111302.

It is not a de Polignac number, because 20311100013 - 2¹⁷ = 20310968941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311100093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5379963 + ... + 5383736.

It is an arithmetic number, because the mean of its divisors is an integer number (1840592700).

Almost surely, 2^20311100013 is an apocalyptic number.

It is an amenable number.

20311100013 is a deficient number, since it is larger than the sum of its proper divisors (9138383187).

20311100013 is a wasteful number, since it uses less digits than its factorization.

20311100013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10763756.

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

Adding to 20311100013 its reverse (31000111302), we get a palindrome (51311211315).

The spelling of 20311100013 in words is "twenty billion, three hundred eleven million, one hundred thousand, thirteen".