12303031220 has 12 divisors (see below), whose sum is σ = 25836365604. Its totient is φ = 4921212480.

The previous prime is 12303031219. The next prime is 12303031241. The reversal of 12303031220 is 2213030321.

It can be written as a sum of positive squares in 2 ways, for example, as 9022720144 + 3280311076 = 94988^2 + 57274^2 .

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 3 ways as a sum of consecutive naturals, for example, 307575761 + ... + 307575800.

It is an arithmetic number, because the mean of its divisors is an integer number (2153030467).

Almost surely, 2^12303031220 is an apocalyptic number.

12303031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12303031220 is an abundant number, since it is smaller than the sum of its proper divisors (13533334384).

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

12303031220 is a wasteful number, since it uses less digits than its factorization.

12303031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615151570 (or 615151568 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 12303031220 its reverse (2213030321), we get a palindrome (14516061541).

The spelling of 12303031220 in words is "twelve billion, three hundred three million, thirty-one thousand, two hundred twenty".