30320113021 has 16 divisors (see below), whose sum is σ = 33695907840. Its totient is φ = 27051738480.

The previous prime is 30320113007. The next prime is 30320113093. The reversal of 30320113021 is 12031102303.

It is a cyclic number.

It is not a de Polignac number, because 30320113021 - 2¹¹ = 30320110973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30320112986 and 30320113004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321113021) 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, 40660 + ... + 249586.

It is an arithmetic number, because the mean of its divisors is an integer number (2105994240).

Almost surely, 2^30320113021 is an apocalyptic number.

It is an amenable number.

30320113021 is a deficient number, since it is larger than the sum of its proper divisors (3375794819).

30320113021 is a wasteful number, since it uses less digits than its factorization.

30320113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209184.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30320113021 its reverse (12031102303), we get a palindrome (42351215324).

It can be divided in two parts, 30320 and 113021, that added together give a palindrome (143341).

The spelling of 30320113021 in words is "thirty billion, three hundred twenty million, one hundred thirteen thousand, twenty-one".