11811347 has 4 divisors (see below), whose sum is σ = 11977776. Its totient is φ = 11644920.

The previous prime is 11811343. The next prime is 11811361. The reversal of 11811347 is 74311811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11811347 - 2² = 11811343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11811343) 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, 83108 + ... + 83249.

It is an arithmetic number, because the mean of its divisors is an integer number (2994444).

Almost surely, 2^11811347 is an apocalyptic number.

11811347 is a deficient number, since it is larger than the sum of its proper divisors (166429).

11811347 is an equidigital number, since it uses as much as digits as its factorization.

11811347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166428.

The product of its digits is 672, while the sum is 26.

The square root of 11811347 is about 3436.7640303053. The cubic root of 11811347 is about 227.7367627298.

The spelling of 11811347 in words is "eleven million, eight hundred eleven thousand, three hundred forty-seven".