312223320321 has 32 divisors (see below), whose sum is σ = 456915703680. Its totient is φ = 188071680000.

The previous prime is 312223320313. The next prime is 312223320337. The reversal of 312223320321 is 123023322213.

It is not a de Polignac number, because 312223320321 - 2³ = 312223320313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312223320291 and 312223320300.

It is not an unprimeable number, because it can be changed into a prime (312223324321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22834875 + ... + 22848543.

It is an arithmetic number, because the mean of its divisors is an integer number (14278615740).

Almost surely, 2^312223320321 is an apocalyptic number.

It is an amenable number.

312223320321 is a deficient number, since it is larger than the sum of its proper divisors (144692383359).

312223320321 is a wasteful number, since it uses less digits than its factorization.

312223320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17857.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 312223320321 its reverse (123023322213), we get a palindrome (435246642534).

The spelling of 312223320321 in words is "three hundred twelve billion, two hundred twenty-three million, three hundred twenty thousand, three hundred twenty-one".