312100303212 has 72 divisors (see below), whose sum is σ = 838664714160. Its totient is φ = 97582147200.

The previous prime is 312100303189. The next prime is 312100303213. The reversal of 312100303212 is 212303001213.

312100303212 is a `hidden beast` number, since 312 + 1 + 0 + 0 + 30 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (312100303213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2189763 + ... + 2327930.

It is an arithmetic number, because the mean of its divisors is an integer number (11648121030).

Almost surely, 2^312100303212 is an apocalyptic number.

It is an amenable number.

312100303212 is an abundant number, since it is smaller than the sum of its proper divisors (526564410948).

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

312100303212 is a wasteful number, since it uses less digits than its factorization.

312100303212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517823 (or 4517818 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 312100303212 its reverse (212303001213), we get a palindrome (524403304425).

The spelling of 312100303212 in words is "three hundred twelve billion, one hundred million, three hundred three thousand, two hundred twelve".