312223311020 has 24 divisors (see below), whose sum is σ = 656604316368. Its totient is φ = 124711160000.

The previous prime is 312223310981. The next prime is 312223311053. The reversal of 312223311020 is 20113322213.

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 = 312223310983 and 312223311001.

It is an unprimeable number.

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, 11120906 + ... + 11148945.

It is an arithmetic number, because the mean of its divisors is an integer number (27358513182).

Almost surely, 2^312223311020 is an apocalyptic number.

It is an amenable number.

312223311020 is an abundant number, since it is smaller than the sum of its proper divisors (344381005348).

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

312223311020 is a wasteful number, since it uses less digits than its factorization.

312223311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22270561 (or 22270559 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312223311020 its reverse (20113322213), we get a palindrome (332336633233).

The spelling of 312223311020 in words is "three hundred twelve billion, two hundred twenty-three million, three hundred eleven thousand, twenty".