8091331 has 4 divisors (see below), whose sum is σ = 8443152. Its totient is φ = 7739512.

The previous prime is 8091289. The next prime is 8091361. The reversal of 8091331 is 1331908.

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 8091331 - 2¹³ = 8083139 is a prime.

It is a super-2 number, since 2×8091331² = 130939274703122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8091296 and 8091305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8091361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175876 + ... + 175921.

It is an arithmetic number, because the mean of its divisors is an integer number (2110788).

Almost surely, 2^8091331 is an apocalyptic number.

8091331 is a deficient number, since it is larger than the sum of its proper divisors (351821).

8091331 is a wasteful number, since it uses less digits than its factorization.

8091331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351820.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 8091331 is about 2844.5264983825. The cubic root of 8091331 is about 200.7582135950.

The spelling of 8091331 in words is "eight million, ninety-one thousand, three hundred thirty-one".