11320405 has 4 divisors (see below), whose sum is σ = 13584492. Its totient is φ = 9056320.

The previous prime is 11320403. The next prime is 11320417. The reversal of 11320405 is 50402311.

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 3129361 + 8191044 = 1769^2 + 2862^2 .

It is not a de Polignac number, because 11320405 - 2¹ = 11320403 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 (11320403) 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, 1132036 + ... + 1132045.

It is an arithmetic number, because the mean of its divisors is an integer number (3396123).

Almost surely, 2^11320405 is an apocalyptic number.

It is an amenable number.

11320405 is a deficient number, since it is larger than the sum of its proper divisors (2264087).

11320405 is an equidigital number, since it uses as much as digits as its factorization.

11320405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264086.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 11320405 is about 3364.5809545915. The cubic root of 11320405 is about 224.5366927292.

Adding to 11320405 its reverse (50402311), we get a palindrome (61722716).

The spelling of 11320405 in words is "eleven million, three hundred twenty thousand, four hundred five".