8132321 has 4 divisors (see below), whose sum is σ = 8208432. Its totient is φ = 8056212.

The previous prime is 8132291. The next prime is 8132329. The reversal of 8132321 is 1232318.

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 8132321 - 2¹⁴ = 8115937 is a prime.

It is a super-2 number, since 2×8132321² = 132269289694082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8132293 and 8132302.

It is not an unprimeable number, because it can be changed into a prime (8132329) 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, 37895 + ... + 38108.

It is an arithmetic number, because the mean of its divisors is an integer number (2052108).

Almost surely, 2^8132321 is an apocalyptic number.

It is an amenable number.

8132321 is a deficient number, since it is larger than the sum of its proper divisors (76111).

8132321 is a wasteful number, since it uses less digits than its factorization.

8132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76110.

The product of its digits is 288, while the sum is 20.

The square root of 8132321 is about 2851.7224619517. The cubic root of 8132321 is about 201.0966507945.

Adding to 8132321 its reverse (1232318), we get a palindrome (9364639).

The spelling of 8132321 in words is "eight million, one hundred thirty-two thousand, three hundred twenty-one".