312330320220 has 192 divisors, whose sum is σ = 949418459136. Its totient is φ = 76488572160.

The previous prime is 312330320213. The next prime is 312330320221. The reversal of 312330320220 is 22023033213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312330320221) 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 63 ways as a sum of consecutive naturals, for example, 5404317 + ... + 5461803.

It is an arithmetic number, because the mean of its divisors is an integer number (4944887808).

Almost surely, 2^312330320220 is an apocalyptic number.

312330320220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312330320220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474709229568).

312330320220 is an abundant number, since it is smaller than the sum of its proper divisors (637088138916).

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

312330320220 is a wasteful number, since it uses less digits than its factorization.

312330320220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57680 (or 57678 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 312330320220 its reverse (22023033213), we get a palindrome (334353353433).

The spelling of 312330320220 in words is "three hundred twelve billion, three hundred thirty million, three hundred twenty thousand, two hundred twenty".