11331427 has 4 divisors (see below), whose sum is σ = 11339496. Its totient is φ = 11323360.

The previous prime is 11331389. The next prime is 11331473. The reversal of 11331427 is 72413311.

11331427 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 brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331398 and 11331407.

It is not an unprimeable number, because it can be changed into a prime (11331227) 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, 1318 + ... + 4939.

It is an arithmetic number, because the mean of its divisors is an integer number (2834874).

Almost surely, 2^11331427 is an apocalyptic number.

11331427 is a deficient number, since it is larger than the sum of its proper divisors (8069).

11331427 is an equidigital number, since it uses as much as digits as its factorization.

11331427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8068.

The product of its digits is 504, while the sum is 22.

The square root of 11331427 is about 3366.2185015236. The cubic root of 11331427 is about 224.6095417324.

Adding to 11331427 its reverse (72413311), we get a palindrome (83744738).

The spelling of 11331427 in words is "eleven million, three hundred thirty-one thousand, four hundred twenty-seven".