8135321 has 4 divisors (see below), whose sum is σ = 8169600. Its totient is φ = 8101044.

The previous prime is 8135311. The next prime is 8135329. The reversal of 8135321 is 1235318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8135321 - 2²² = 3941017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8135329) 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, 16781 + ... + 17258.

It is an arithmetic number, because the mean of its divisors is an integer number (2042400).

Almost surely, 2^8135321 is an apocalyptic number.

It is an amenable number.

8135321 is a deficient number, since it is larger than the sum of its proper divisors (34279).

8135321 is a wasteful number, since it uses less digits than its factorization.

8135321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34278.

The product of its digits is 720, while the sum is 23.

The square root of 8135321 is about 2852.2484113415. The cubic root of 8135321 is about 201.1213758303.

The spelling of 8135321 in words is "eight million, one hundred thirty-five thousand, three hundred twenty-one".