312212243013020 has 96 divisors (see below), whose sum is σ = 757170245397888. Its totient is φ = 105921613873152.

The previous prime is 312212243012983. The next prime is 312212243013043. The reversal of 312212243013020 is 20310342212213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73618664 + ... + 77744016.

It is an arithmetic number, because the mean of its divisors is an integer number (7887190056228).

Almost surely, 2^{312212243013020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312212243013020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378585122698944).

312212243013020 is an abundant number, since it is smaller than the sum of its proper divisors (444958002384868).

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

312212243013020 is a wasteful number, since it uses less digits than its factorization.

312212243013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131039 (or 4131037 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 312212243013020 its reverse (20310342212213), we get a palindrome (332522585225233).

The spelling of 312212243013020 in words is "three hundred twelve trillion, two hundred twelve billion, two hundred forty-three million, thirteen thousand, twenty".