312230122132321 has 4 divisors (see below), whose sum is σ = 312230680535700. Its totient is φ = 312229563728944.

The previous prime is 312230122132319. The next prime is 312230122132393. The reversal of 312230122132321 is 123231221032213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58460092646400 + 253770029485921 = 7645920^2 + 15930161^2 .

It is a cyclic number.

It is not a de Polignac number, because 312230122132321 - 2¹ = 312230122132319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312230122132321.

It is not an unprimeable number, because it can be changed into a prime (312230122138321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278362126 + ... + 279481543.

It is an arithmetic number, because the mean of its divisors is an integer number (78057670133925).

Almost surely, 2^{312230122132321} is an apocalyptic number.

It is an amenable number.

312230122132321 is a deficient number, since it is larger than the sum of its proper divisors (558403379).

312230122132321 is an equidigital number, since it uses as much as digits as its factorization.

312230122132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558403378.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 312230122132321 its reverse (123231221032213), we get a palindrome (435461343164534).

It can be divided in two parts, 31223012 and 2132321, that added together give a palindrome (33355333).

The spelling of 312230122132321 in words is "three hundred twelve trillion, two hundred thirty billion, one hundred twenty-two million, one hundred thirty-two thousand, three hundred twenty-one".