30420444013 has 4 divisors (see below), whose sum is σ = 30524268348. Its totient is φ = 30316619680.

The previous prime is 30420444007. The next prime is 30420444017. The reversal of 30420444013 is 31044402403.

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 27397863529 + 3022580484 = 165523^2 + 54978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30420444013 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 (30420444017) 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, 51911728 + ... + 51912313.

It is an arithmetic number, because the mean of its divisors is an integer number (7631067087).

Almost surely, 2^30420444013 is an apocalyptic number.

It is an amenable number.

30420444013 is a deficient number, since it is larger than the sum of its proper divisors (103824335).

30420444013 is a wasteful number, since it uses less digits than its factorization.

30420444013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103824334.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 30420444013 its reverse (31044402403), we get a palindrome (61464846416).

The spelling of 30420444013 in words is "thirty billion, four hundred twenty million, four hundred forty-four thousand, thirteen".