312211323313 has 4 divisors (see below), whose sum is σ = 313551286308. Its totient is φ = 310871360320.

The previous prime is 312211323253. The next prime is 312211323317. The reversal of 312211323313 is 313323112213.

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 22625273889 + 289586049424 = 150417^2 + 538132^2 .

It is a cyclic number.

It is not a de Polignac number, because 312211323313 - 2¹³ = 312211315121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312211323317) 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, 669981148 + ... + 669981613.

It is an arithmetic number, because the mean of its divisors is an integer number (78387821577).

Almost surely, 2^312211323313 is an apocalyptic number.

It is an amenable number.

312211323313 is a deficient number, since it is larger than the sum of its proper divisors (1339962995).

312211323313 is a wasteful number, since it uses less digits than its factorization.

312211323313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339962994.

The product of its digits is 1944, while the sum is 25.

Adding to 312211323313 its reverse (313323112213), we get a palindrome (625534435526).

The spelling of 312211323313 in words is "three hundred twelve billion, two hundred eleven million, three hundred twenty-three thousand, three hundred thirteen".