11331687 has 4 divisors (see below), whose sum is σ = 15108920. Its totient is φ = 7554456.

The previous prime is 11331679. The next prime is 11331689. The reversal of 11331687 is 78613311.

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

It is not a de Polignac number, because 11331687 - 2³ = 11331679 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 (11331689) 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, 1888612 + ... + 1888617.

It is an arithmetic number, because the mean of its divisors is an integer number (3777230).

Almost surely, 2^11331687 is an apocalyptic number.

11331687 is a deficient number, since it is larger than the sum of its proper divisors (3777233).

11331687 is an equidigital number, since it uses as much as digits as its factorization.

11331687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777232.

The product of its digits is 3024, while the sum is 30.

The square root of 11331687 is about 3366.2571203044. The cubic root of 11331687 is about 224.6112596106.

Adding to 11331687 its reverse (78613311), we get a palindrome (89944998).

The spelling of 11331687 in words is "eleven million, three hundred thirty-one thousand, six hundred eighty-seven".