1321330441 has 8 divisors (see below), whose sum is σ = 1340401664. Its totient is φ = 1302285600.

The previous prime is 1321330337. The next prime is 1321330447. The reversal of 1321330441 is 1440331231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321330441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321330447) 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, 108616 + ... + 120166.

It is an arithmetic number, because the mean of its divisors is an integer number (167550208).

Almost surely, 2^1321330441 is an apocalyptic number.

It is an amenable number.

1321330441 is a deficient number, since it is larger than the sum of its proper divisors (19071223).

1321330441 is a wasteful number, since it uses less digits than its factorization.

1321330441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13191.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1321330441 is about 36350.1092295470. The cubic root of 1321330441 is about 1097.3297327715.

Adding to 1321330441 its reverse (1440331231), we get a palindrome (2761661672).

The spelling of 1321330441 in words is "one billion, three hundred twenty-one million, three hundred thirty thousand, four hundred forty-one".