30312230420 has 12 divisors (see below), whose sum is σ = 63655683924. Its totient is φ = 12124892160.

The previous prime is 30312230387. The next prime is 30312230441. The reversal of 30312230420 is 2403221303.

It can be written as a sum of positive squares in 2 ways, for example, as 14786073604 + 15526156816 = 121598^2 + 124604^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1515611521 = 30312230420 / (3 + 0 + 3 + 1 + 2 + 2 + 3 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 30312230392 and 30312230401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757805741 + ... + 757805780.

It is an arithmetic number, because the mean of its divisors is an integer number (5304640327).

Almost surely, 2^30312230420 is an apocalyptic number.

It is an amenable number.

30312230420 is an abundant number, since it is smaller than the sum of its proper divisors (33343453504).

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

30312230420 is a wasteful number, since it uses less digits than its factorization.

30312230420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515611530 (or 1515611528 counting only the distinct ones).

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

Adding to 30312230420 its reverse (2403221303), we get a palindrome (32715451723).

The spelling of 30312230420 in words is "thirty billion, three hundred twelve million, two hundred thirty thousand, four hundred twenty".