30312003220 has 24 divisors (see below), whose sum is σ = 63766711008. Its totient is φ = 12103562400.

The previous prime is 30312003199. The next prime is 30312003223. The reversal of 30312003220 is 2230021303.

It is a junction number, because it is equal to n+sod(n) for n = 30312003194 and 30312003203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312003223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1315726 + ... + 1338565.

It is an arithmetic number, because the mean of its divisors is an integer number (2656946292).

Almost surely, 2^30312003220 is an apocalyptic number.

It is an amenable number.

30312003220 is an abundant number, since it is smaller than the sum of its proper divisors (33454707788).

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

30312003220 is a wasteful number, since it uses less digits than its factorization.

30312003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654871 (or 2654869 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30312003220 its reverse (2230021303), we get a palindrome (32542024523).

The spelling of 30312003220 in words is "thirty billion, three hundred twelve million, three thousand, two hundred twenty".