11331309 has 8 divisors (see below), whose sum is σ = 16481952. Its totient is φ = 6867440.

The previous prime is 11331289. The next prime is 11331311. The reversal of 11331309 is 90313311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11331309 - 2⁸ = 11331053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171654 + ... + 171719.

It is an arithmetic number, because the mean of its divisors is an integer number (2060244).

Almost surely, 2^11331309 is an apocalyptic number.

It is an amenable number.

11331309 is a deficient number, since it is larger than the sum of its proper divisors (5150643).

11331309 is a wasteful number, since it uses less digits than its factorization.

11331309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343387.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 11331309 is about 3366.2009743923. The cubic root of 11331309 is about 224.6087620713.

It can be divided in two parts, 1133 and 1309, that added together give a palindrome (2442).

The spelling of 11331309 in words is "eleven million, three hundred thirty-one thousand, three hundred nine".