20316530211 has 4 divisors (see below), whose sum is σ = 27088706952. Its totient is φ = 13544353472.

The previous prime is 20316530173. The next prime is 20316530287. The reversal of 20316530211 is 11203561302.

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 20316530211 - 2¹⁷ = 20316399139 is a prime.

It is a super-2 number, since 2×20316530211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20316530911) 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 3 ways as a sum of consecutive naturals, for example, 3386088366 + ... + 3386088371.

It is an arithmetic number, because the mean of its divisors is an integer number (6772176738).

Almost surely, 2^20316530211 is an apocalyptic number.

20316530211 is a deficient number, since it is larger than the sum of its proper divisors (6772176741).

20316530211 is an equidigital number, since it uses as much as digits as its factorization.

20316530211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772176740.

The product of its (nonzero) digits is 1080, while the sum is 24.

The spelling of 20316530211 in words is "twenty billion, three hundred sixteen million, five hundred thirty thousand, two hundred eleven".