11727321 has 4 divisors (see below), whose sum is σ = 15636432. Its totient is φ = 7818212.

The previous prime is 11727293. The next prime is 11727323. The reversal of 11727321 is 12372711.

11727321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 11727321 - 2¹⁹ = 11203033 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11727291 and 11727300.

It is not an unprimeable number, because it can be changed into a prime (11727323) 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, 1954551 + ... + 1954556.

It is an arithmetic number, because the mean of its divisors is an integer number (3909108).

Almost surely, 2^11727321 is an apocalyptic number.

It is an amenable number.

11727321 is a deficient number, since it is larger than the sum of its proper divisors (3909111).

11727321 is an equidigital number, since it uses as much as digits as its factorization.

11727321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909110.

The product of its digits is 588, while the sum is 24.

The square root of 11727321 is about 3424.5176302656. The cubic root of 11727321 is about 227.1954367533.

The spelling of 11727321 in words is "eleven million, seven hundred twenty-seven thousand, three hundred twenty-one".