1321347 has 8 divisors (see below), whose sum is σ = 1802944. Its totient is φ = 860328.

The previous prime is 1321319. The next prime is 1321349. The reversal of 1321347 is 7431231.

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

It is not a de Polignac number, because 1321347 - 2⁶ = 1321283 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321349) 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, 4993 + ... + 5250.

It is an arithmetic number, because the mean of its divisors is an integer number (225368).

2^1321347 is an apocalyptic number.

1321347 is a deficient number, since it is larger than the sum of its proper divisors (481597).

1321347 is a wasteful number, since it uses less digits than its factorization.

1321347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10289.

The product of its digits is 504, while the sum is 21.

The square root of 1321347 is about 1149.4985863410. The cubic root of 1321347 is about 109.7334316688.

Adding to 1321347 its reverse (7431231), we get a palindrome (8752578).

The spelling of 1321347 in words is "one million, three hundred twenty-one thousand, three hundred forty-seven".