30528311105 has 4 divisors (see below), whose sum is σ = 36633973332. Its totient is φ = 24422648880.

The previous prime is 30528311101. The next prime is 30528311131. The reversal of 30528311105 is 50111382503.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10159027264 + 20369283841 = 100792^2 + 142721^2 .

It is not a de Polignac number, because 30528311105 - 2² = 30528311101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30528311101) 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, 3052831106 + ... + 3052831115.

It is an arithmetic number, because the mean of its divisors is an integer number (9158493333).

Almost surely, 2^30528311105 is an apocalyptic number.

It is an amenable number.

30528311105 is a deficient number, since it is larger than the sum of its proper divisors (6105662227).

30528311105 is an equidigital number, since it uses as much as digits as its factorization.

30528311105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105662226.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 30528311105 its reverse (50111382503), we get a palindrome (80639693608).

The spelling of 30528311105 in words is "thirty billion, five hundred twenty-eight million, three hundred eleven thousand, one hundred five".