312403341211321 has 4 divisors (see below), whose sum is σ = 320022934899444. Its totient is φ = 304783747523200.

The previous prime is 312403341211279. The next prime is 312403341211369. The reversal of 312403341211321 is 123112143304213.

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 83394592900096 + 229008748311225 = 9132064^2 + 15133035^2 .

It is a cyclic number.

It is not a de Polignac number, because 312403341211321 - 2¹⁹ = 312403340687033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312403341811321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3809796844000 + ... + 3809796844081.

It is an arithmetic number, because the mean of its divisors is an integer number (80005733724861).

Almost surely, 2^{312403341211321} is an apocalyptic number.

It is an amenable number.

312403341211321 is a deficient number, since it is larger than the sum of its proper divisors (7619593688123).

312403341211321 is an equidigital number, since it uses as much as digits as its factorization.

312403341211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7619593688122.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 312403341211321 its reverse (123112143304213), we get a palindrome (435515484515534).

The spelling of 312403341211321 in words is "three hundred twelve trillion, four hundred three billion, three hundred forty-one million, two hundred eleven thousand, three hundred twenty-one".