30311221103 has 4 divisors (see below), whose sum is σ = 30379644168. Its totient is φ = 30242798040.

The previous prime is 30311221091. The next prime is 30311221123. The reversal of 30311221103 is 30112211303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30112211303 = 43207 ⋅696929.

It is a cyclic number.

It is not a de Polignac number, because 30311221103 - 2¹² = 30311217007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311221123) 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, 34210868 + ... + 34211753.

It is an arithmetic number, because the mean of its divisors is an integer number (7594911042).

Almost surely, 2^30311221103 is an apocalyptic number.

30311221103 is a deficient number, since it is larger than the sum of its proper divisors (68423065).

30311221103 is an equidigital number, since it uses as much as digits as its factorization.

30311221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68423064.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30311221103 its reverse (30112211303), we get a palindrome (60423432406).

The spelling of 30311221103 in words is "thirty billion, three hundred eleven million, two hundred twenty-one thousand, one hundred three".