20110030305 has 32 divisors (see below), whose sum is σ = 33425660928. Its totient is φ = 10313222400.

The previous prime is 20110030261. The next prime is 20110030307. The reversal of 20110030305 is 50303001102.

It is a happy number.

It is not a de Polignac number, because 20110030305 - 2¹⁰ = 20110029281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20110030307) 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 31 ways as a sum of consecutive naturals, for example, 64726 + ... + 210735.

It is an arithmetic number, because the mean of its divisors is an integer number (1044551904).

Almost surely, 2^20110030305 is an apocalyptic number.

It is an amenable number.

20110030305 is a deficient number, since it is larger than the sum of its proper divisors (13315630623).

20110030305 is a wasteful number, since it uses less digits than its factorization.

20110030305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275657.

The product of its (nonzero) digits is 90, while the sum is 15.

Adding to 20110030305 its reverse (50303001102), we get a palindrome (70413031407).

The spelling of 20110030305 in words is "twenty billion, one hundred ten million, thirty thousand, three hundred five".