30320421040 has 160 divisors (see below), whose sum is σ = 89755505280. Its totient is φ = 9264955392.

The previous prime is 30320421031. The next prime is 30320421041. The reversal of 30320421040 is 4012402303.

It is a junction number, because it is equal to n+sod(n) for n = 30320420999 and 30320421017.

It is not an unprimeable number, because it can be changed into a prime (30320421041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139312 + ... + 282928.

It is an arithmetic number, because the mean of its divisors is an integer number (560971908).

Almost surely, 2^30320421040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30320421040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44877752640).

30320421040 is an abundant number, since it is smaller than the sum of its proper divisors (59435084240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30320421040 is a wasteful number, since it uses less digits than its factorization.

30320421040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143679 (or 143673 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 30320421040 its reverse (4012402303), we get a palindrome (34332823343).

The spelling of 30320421040 in words is "thirty billion, three hundred twenty million, four hundred twenty-one thousand, forty".