312203133220 has 48 divisors (see below), whose sum is σ = 715409247168. Its totient is φ = 113499800960.

The previous prime is 312203133161. The next prime is 312203133223. The reversal of 312203133220 is 22331302213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 312203133191 and 312203133200.

It is not an unprimeable number, because it can be changed into a prime (312203133223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706047 + ... + 1059673.

It is an arithmetic number, because the mean of its divisors is an integer number (14904359316).

Almost surely, 2^312203133220 is an apocalyptic number.

It is an amenable number.

312203133220 is an abundant number, since it is smaller than the sum of its proper divisors (403206113948).

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

312203133220 is a wasteful number, since it uses less digits than its factorization.

312203133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357660 (or 357658 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 312203133220 its reverse (22331302213), we get a palindrome (334534435433).

The spelling of 312203133220 in words is "three hundred twelve billion, two hundred three million, one hundred thirty-three thousand, two hundred twenty".