30123333020 has 144 divisors (see below), whose sum is σ = 75070800000. Its totient is φ = 10041321600.

The previous prime is 30123332983. The next prime is 30123333041. The reversal of 30123333020 is 2033332103.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30123332983 and 30123333001.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 4013231 + ... + 4020729.

It is an arithmetic number, because the mean of its divisors is an integer number (521325000).

Almost surely, 2^30123333020 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 30123333020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37535400000).

30123333020 is an abundant number, since it is smaller than the sum of its proper divisors (44947466980).

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

30123333020 is a wasteful number, since it uses less digits than its factorization.

30123333020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7600 (or 7567 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 30123333020 its reverse (2033332103), we get a palindrome (32156665123).

The spelling of 30123333020 in words is "thirty billion, one hundred twenty-three million, three hundred thirty-three thousand, twenty".