30123320420 has 24 divisors (see below), whose sum is σ = 63499512384. Its totient is φ = 12003511136.

The previous prime is 30123320419. The next prime is 30123320467. The reversal of 30123320420 is 2402332103.

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 = 30123320392 and 30123320401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2858174 + ... + 2868693.

It is an arithmetic number, because the mean of its divisors is an integer number (2645813016).

Almost surely, 2^30123320420 is an apocalyptic number.

It is an amenable number.

30123320420 is an abundant number, since it is smaller than the sum of its proper divisors (33376191964).

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

30123320420 is a wasteful number, since it uses less digits than its factorization.

30123320420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727139 (or 5727137 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 30123320420 its reverse (2402332103), we get a palindrome (32525652523).

The spelling of 30123320420 in words is "thirty billion, one hundred twenty-three million, three hundred twenty thousand, four hundred twenty".