20321310011 has 4 divisors (see below), whose sum is σ = 20433582624. Its totient is φ = 20209037400.

The previous prime is 20321310001. The next prime is 20321310017. The reversal of 20321310011 is 11001312302.

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 20321310011 - 2⁶ = 20321309947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321310017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56136035 + ... + 56136396.

It is an arithmetic number, because the mean of its divisors is an integer number (5108395656).

Almost surely, 2^20321310011 is an apocalyptic number.

20321310011 is a deficient number, since it is larger than the sum of its proper divisors (112272613).

20321310011 is a wasteful number, since it uses less digits than its factorization.

20321310011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112272612.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20321310011 its reverse (11001312302), we get a palindrome (31322622313).

The spelling of 20321310011 in words is "twenty billion, three hundred twenty-one million, three hundred ten thousand, eleven".