20310030211 has 4 divisors (see below), whose sum is σ = 20312091424. Its totient is φ = 20307969000.

The previous prime is 20310030187. The next prime is 20310030233. The reversal of 20310030211 is 11203001302.

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 20310030211 - 2⁵ = 20310030179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20310030191 and 20310030200.

It is not an unprimeable number, because it can be changed into a prime (20310030281) 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, 1015755 + ... + 1035556.

It is an arithmetic number, because the mean of its divisors is an integer number (5078022856).

Almost surely, 2^20310030211 is an apocalyptic number.

20310030211 is a deficient number, since it is larger than the sum of its proper divisors (2061213).

20310030211 is an equidigital number, since it uses as much as digits as its factorization.

20310030211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061212.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20310030211 its reverse (11203001302), we get a palindrome (31513031513).

The spelling of 20310030211 in words is "twenty billion, three hundred ten million, thirty thousand, two hundred eleven".