8118321 has 4 divisors (see below), whose sum is σ = 10824432. Its totient is φ = 5412212.

The previous prime is 8118251. The next prime is 8118329. The reversal of 8118321 is 1238118.

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 8118321 - 2⁷ = 8118193 is a prime.

8118321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8118291 and 8118300.

It is not an unprimeable number, because it can be changed into a prime (8118329) 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, 1353051 + ... + 1353056.

It is an arithmetic number, because the mean of its divisors is an integer number (2706108).

Almost surely, 2^8118321 is an apocalyptic number.

It is an amenable number.

8118321 is a deficient number, since it is larger than the sum of its proper divisors (2706111).

8118321 is a wasteful number, since it uses less digits than its factorization.

8118321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706110.

The product of its digits is 384, while the sum is 24.

The square root of 8118321 is about 2849.2667477792. The cubic root of 8118321 is about 200.9811868236.

The spelling of 8118321 in words is "eight million, one hundred eighteen thousand, three hundred twenty-one".