312303022220 has 24 divisors (see below), whose sum is σ = 749527253664. Its totient is φ = 107075321856.

The previous prime is 312303022201. The next prime is 312303022223. The reversal of 312303022220 is 22220303213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 312303022192 and 312303022201.

It is not an unprimeable number, because it can be changed into a prime (312303022223) 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 7 ways as a sum of consecutive naturals, for example, 1115367797 + ... + 1115368076.

It is an arithmetic number, because the mean of its divisors is an integer number (31230302236).

Almost surely, 2^312303022220 is an apocalyptic number.

It is an amenable number.

312303022220 is an abundant number, since it is smaller than the sum of its proper divisors (437224231444).

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

312303022220 is a wasteful number, since it uses less digits than its factorization.

312303022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230735889 (or 2230735887 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 312303022220 its reverse (22220303213), we get a palindrome (334523325433).

The spelling of 312303022220 in words is "three hundred twelve billion, three hundred three million, twenty-two thousand, two hundred twenty".