2311120321 has 4 divisors (see below), whose sum is σ = 2324479572. Its totient is φ = 2297761072.

The previous prime is 2311120319. The next prime is 2311120333. The reversal of 2311120321 is 1230211132.

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 2075804721 + 235315600 = 45561^2 + 15340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311120321 - 2¹ = 2311120319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2311120295 and 2311120304.

It is not an unprimeable number, because it can be changed into a prime (2311120421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6679366 + ... + 6679711.

It is an arithmetic number, because the mean of its divisors is an integer number (581119893).

Almost surely, 2^2311120321 is an apocalyptic number.

It is an amenable number.

2311120321 is a deficient number, since it is larger than the sum of its proper divisors (13359251).

2311120321 is a wasteful number, since it uses less digits than its factorization.

2311120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13359250.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2311120321 is about 48074.1127947256. The cubic root of 2311120321 is about 1322.1300780332.

Adding to 2311120321 its reverse (1230211132), we get a palindrome (3541331453).

The spelling of 2311120321 in words is "two billion, three hundred eleven million, one hundred twenty thousand, three hundred twenty-one".