312023033311321 has 4 divisors (see below), whose sum is σ = 313746917473444. Its totient is φ = 310299149149200.

The previous prime is 312023033311307. The next prime is 312023033311333. The reversal of 312023033311321 is 123113330320213.

It is a happy number.

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 91940022623296 + 220083010688025 = 9588536^2 + 14835195^2 .

It is a cyclic number.

It is not a de Polignac number, because 312023033311321 - 2⁹ = 312023033310809 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 312023033311321.

It is not an unprimeable number, because it can be changed into a prime (312023033311721) 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, 861942080790 + ... + 861942081151.

It is an arithmetic number, because the mean of its divisors is an integer number (78436729368361).

Almost surely, 2^{312023033311321} is an apocalyptic number.

It is an amenable number.

312023033311321 is a deficient number, since it is larger than the sum of its proper divisors (1723884162123).

312023033311321 is a wasteful number, since it uses less digits than its factorization.

312023033311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723884162122.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 312023033311321 its reverse (123113330320213), we get a palindrome (435136363631534).

The spelling of 312023033311321 in words is "three hundred twelve trillion, twenty-three billion, thirty-three million, three hundred eleven thousand, three hundred twenty-one".