20304434211 has 16 divisors (see below), whose sum is σ = 28883910528. Its totient is φ = 12642780800.

The previous prime is 20304434179. The next prime is 20304434239. The reversal of 20304434211 is 11243440302.

It is a cyclic number.

It is not a de Polignac number, because 20304434211 - 2⁵ = 20304434179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20304634211) 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, 1512885 + ... + 1526246.

It is an arithmetic number, because the mean of its divisors is an integer number (1805244408).

Almost surely, 2^20304434211 is an apocalyptic number.

20304434211 is a deficient number, since it is larger than the sum of its proper divisors (8579476317).

20304434211 is a wasteful number, since it uses less digits than its factorization.

20304434211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039282.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20304434211 its reverse (11243440302), we get a palindrome (31547874513).

The spelling of 20304434211 in words is "twenty billion, three hundred four million, four hundred thirty-four thousand, two hundred eleven".