83284321 has 4 divisors (see below), whose sum is σ = 85970944. Its totient is φ = 80597700.

The previous prime is 83284319. The next prime is 83284339. The reversal of 83284321 is 12348238.

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 83284321 - 2¹ = 83284319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 2686591 = 83284321 / (8 + 3 + 2 + 8 + 4 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83284301) 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, 1343265 + ... + 1343326.

It is an arithmetic number, because the mean of its divisors is an integer number (21492736).

Almost surely, 2^83284321 is an apocalyptic number.

It is an amenable number.

83284321 is a deficient number, since it is larger than the sum of its proper divisors (2686623).

83284321 is a wasteful number, since it uses less digits than its factorization.

83284321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686622.

The product of its digits is 9216, while the sum is 31.

The square root of 83284321 is about 9126.0243808572. The cubic root of 83284321 is about 436.7045831406.

The spelling of 83284321 in words is "eighty-three million, two hundred eighty-four thousand, three hundred twenty-one".