1321304 has 32 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 613536.

The previous prime is 1321303. The next prime is 1321319. The reversal of 1321304 is 4031231.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7829 + ... + 7995.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2^1321304 is an apocalyptic number.

It is an amenable number.

1321304 is an abundant number, since it is smaller than the sum of its proper divisors (1339816).

1321304 is a wasteful number, since it uses less digits than its factorization.

1321304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1321304 is about 1149.4798823816. The cubic root of 1321304 is about 109.7322413207.

Adding to 1321304 its reverse (4031231), we get a palindrome (5352535).

The spelling of 1321304 in words is "one million, three hundred twenty-one thousand, three hundred four".