11800321 has 4 divisors (see below), whose sum is σ = 12708052. Its totient is φ = 10892592.

The previous prime is 11800319. The next prime is 11800339. The reversal of 11800321 is 12300811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12300811 = 383 ⋅32117.

It can be written as a sum of positive squares in 2 ways, for example, as 2436721 + 9363600 = 1561^2 + 3060^2 .

It is a cyclic number.

It is not a de Polignac number, because 11800321 - 2¹ = 11800319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11800295 and 11800304.

It is not an unprimeable number, because it can be changed into a prime (11800351) 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, 453846 + ... + 453871.

It is an arithmetic number, because the mean of its divisors is an integer number (3177013).

Almost surely, 2^11800321 is an apocalyptic number.

It is an amenable number.

11800321 is a deficient number, since it is larger than the sum of its proper divisors (907731).

11800321 is an equidigital number, since it uses as much as digits as its factorization.

11800321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907730.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 11800321 is about 3435.1595305022. The cubic root of 11800321 is about 227.6658758867.

It can be divided in two parts, 11800 and 321, that added together give a palindrome (12121).

The spelling of 11800321 in words is "eleven million, eight hundred thousand, three hundred twenty-one".