311463646313 has 4 divisors (see below), whose sum is σ = 316112357520. Its totient is φ = 306814935108.

The previous prime is 311463646297. The next prime is 311463646321. The reversal of 311463646313 is 313646364113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313646364113 = 43 ⋅7294101491.

It is a cyclic number.

It is not a de Polignac number, because 311463646313 - 2⁴ = 311463646297 is a prime.

It is a super-4 number, since 4×311463646313⁴ (a number of 47 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (311463643313) 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, 2324355503 + ... + 2324355636.

It is an arithmetic number, because the mean of its divisors is an integer number (79028089380).

Almost surely, 2^311463646313 is an apocalyptic number.

It is an amenable number.

311463646313 is a deficient number, since it is larger than the sum of its proper divisors (4648711207).

311463646313 is an equidigital number, since it uses as much as digits as its factorization.

311463646313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4648711206.

The product of its digits is 279936, while the sum is 41.

The spelling of 311463646313 in words is "three hundred eleven billion, four hundred sixty-three million, six hundred forty-six thousand, three hundred thirteen".