312203123320 has 64 divisors (see below), whose sum is σ = 799634903040. Its totient is φ = 108592387200.

The previous prime is 312203123311. The next prime is 312203123359. The reversal of 312203123320 is 23321302213.

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 = 312203123291 and 312203123300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15414936 + ... + 15435175.

It is an arithmetic number, because the mean of its divisors is an integer number (12494295360).

Almost surely, 2^312203123320 is an apocalyptic number.

It is an amenable number.

312203123320 is an abundant number, since it is smaller than the sum of its proper divisors (487431779720).

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

312203123320 is a wasteful number, since it uses less digits than its factorization.

312203123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30850156 (or 30850152 counting only the distinct ones).

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

Adding to 312203123320 its reverse (23321302213), we get a palindrome (335524425533).

The spelling of 312203123320 in words is "three hundred twelve billion, two hundred three million, one hundred twenty-three thousand, three hundred twenty".