1302321 has 4 divisors (see below), whose sum is σ = 1736432. Its totient is φ = 868212.

The previous prime is 1302313. The next prime is 1302331. The reversal of 1302321 is 1232031.

It is a happy number.

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 not a de Polignac number, because 1302321 - 2³ = 1302313 is a prime.

It is a D-number.

It is a Duffinian number.

1302321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1302297 and 1302306.

It is not an unprimeable number, because it can be changed into a prime (1302331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217051 + ... + 217056.

It is an arithmetic number, because the mean of its divisors is an integer number (434108).

2^1302321 is an apocalyptic number.

It is an amenable number.

1302321 is a deficient number, since it is larger than the sum of its proper divisors (434111).

1302321 is an equidigital number, since it uses as much as digits as its factorization.

1302321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434110.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1302321 is about 1141.1927970330. The cubic root of 1302321 is about 109.2042015585.

Adding to 1302321 its reverse (1232031), we get a palindrome (2534352).

The spelling of 1302321 in words is "one million, three hundred two thousand, three hundred twenty-one".