1321306 has 8 divisors (see below), whose sum is σ = 2265120. Its totient is φ = 566268.

The previous prime is 1321303. The next prime is 1321319. The reversal of 1321306 is 6031231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 1321306.

It is not an unprimeable number, because it can be changed into a prime (1321301) 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, 47176 + ... + 47203.

It is an arithmetic number, because the mean of its divisors is an integer number (283140).

2^1321306 is an apocalyptic number.

1321306 is a deficient number, since it is larger than the sum of its proper divisors (943814).

1321306 is an equidigital number, since it uses as much as digits as its factorization.

1321306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94388.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1321306 is about 1149.4807523399. The cubic root of 1321306 is about 109.7322966863.

Adding to 1321306 its reverse (6031231), we get a palindrome (7352537).

The spelling of 1321306 in words is "one million, three hundred twenty-one thousand, three hundred six".