1016321 has 4 divisors (see below), whose sum is σ = 1033044. Its totient is φ = 999600.

The previous prime is 1016303. The next prime is 1016339. The reversal of 1016321 is 1236101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1236101 = 859 ⋅1439.

It is an interprime number because it is at equal distance from previous prime (1016303) and next prime (1016339).

It can be written as a sum of positive squares in 2 ways, for example, as 215296 + 801025 = 464^2 + 895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1016321 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 = 1016296 and 1016305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8270 + ... + 8391.

It is an arithmetic number, because the mean of its divisors is an integer number (258261).

2^1016321 is an apocalyptic number.

It is an amenable number.

1016321 is a deficient number, since it is larger than the sum of its proper divisors (16723).

1016321 is an equidigital number, since it uses as much as digits as its factorization.

1016321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16722.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1016321 is about 1008.1274720986. The cubic root of 1016321 is about 100.5411001586.

The spelling of 1016321 in words is "one million, sixteen thousand, three hundred twenty-one".