11309387 has 4 divisors (see below), whose sum is σ = 11572440. Its totient is φ = 11046336.

The previous prime is 11309381. The next prime is 11309393. The reversal of 11309387 is 78390311.

11309387 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 an emirpimes, since its reverse is a distinct semiprime: 78390311 = 241 ⋅325271.

It is an interprime number because it is at equal distance from previous prime (11309381) and next prime (11309393).

It is a cyclic number.

It is not a de Polignac number, because 11309387 - 2¹⁸ = 11047243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11309381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131462 + ... + 131547.

It is an arithmetic number, because the mean of its divisors is an integer number (2893110).

Almost surely, 2^11309387 is an apocalyptic number.

11309387 is a deficient number, since it is larger than the sum of its proper divisors (263053).

11309387 is an equidigital number, since it uses as much as digits as its factorization.

11309387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263052.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 11309387 is about 3362.9432049917. The cubic root of 11309387 is about 224.4638228883.

Adding to 11309387 its reverse (78390311), we get a palindrome (89699698).

The spelling of 11309387 in words is "eleven million, three hundred nine thousand, three hundred eighty-seven".