30321444421 has 16 divisors (see below), whose sum is σ = 31699641600. Its totient is φ = 28965832000.

The previous prime is 30321444407. The next prime is 30321444431. The reversal of 30321444421 is 12444412303.

It is a cyclic number.

It is not a de Polignac number, because 30321444421 - 2¹¹ = 30321442373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30321444421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321444431) 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, 5793876 + ... + 5799106.

It is an arithmetic number, because the mean of its divisors is an integer number (1981227600).

Almost surely, 2^30321444421 is an apocalyptic number.

It is an amenable number.

30321444421 is a deficient number, since it is larger than the sum of its proper divisors (1378197179).

30321444421 is a wasteful number, since it uses less digits than its factorization.

30321444421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 30321444421 its reverse (12444412303), we get a palindrome (42765856724).

The spelling of 30321444421 in words is "thirty billion, three hundred twenty-one million, four hundred forty-four thousand, four hundred twenty-one".