9813321311 has 4 divisors (see below), whose sum is σ = 9813657792. Its totient is φ = 9812984832.

The previous prime is 9813321299. The next prime is 9813321319. The reversal of 9813321311 is 1131233189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1131233189 = 29 ⋅39008041.

It is a cyclic number.

It is not a de Polignac number, because 9813321311 - 2²⁶ = 9746212447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9813321319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119855 + ... + 184368.

It is an arithmetic number, because the mean of its divisors is an integer number (2453414448).

Almost surely, 2^9813321311 is an apocalyptic number.

9813321311 is a deficient number, since it is larger than the sum of its proper divisors (336481).

9813321311 is a wasteful number, since it uses less digits than its factorization.

9813321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336480.

The product of its digits is 3888, while the sum is 32.

The square root of 9813321311 is about 99062.2092979962. The cubic root of 9813321311 is about 2140.9441572160.

The spelling of 9813321311 in words is "nine billion, eight hundred thirteen million, three hundred twenty-one thousand, three hundred eleven".