1321349 has 2 divisors, whose sum is σ = 1321350. Its totient is φ = 1321348.

The previous prime is 1321319. The next prime is 1321351. The reversal of 1321349 is 9431231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1288225 + 33124 = 1135^2 + 182^2 .

It is an emirp because it is prime and its reverse (9431231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321349 - 2⁸ = 1321093 is a prime.

It is a Sophie Germain prime.

Together with 1321351, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321319) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660674 + 660675.

It is an arithmetic number, because the mean of its divisors is an integer number (660675).

2^1321349 is an apocalyptic number.

It is an amenable number.

1321349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321349 is an equidigital number, since it uses as much as digits as its factorization.

1321349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 1321349 is about 1149.4994562852. The cubic root of 1321349 is about 109.7334870332.

The spelling of 1321349 in words is "one million, three hundred twenty-one thousand, three hundred forty-nine".