1320241321 has 8 divisors (see below), whose sum is σ = 1519703360. Its totient is φ = 1123493328.

The previous prime is 1320241319. The next prime is 1320241337. The reversal of 1320241321 is 1231420231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1320241321 - 2¹ = 1320241319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320241381) 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, 677466 + ... + 679411.

It is an arithmetic number, because the mean of its divisors is an integer number (189962920).

Almost surely, 2^1320241321 is an apocalyptic number.

It is an amenable number.

1320241321 is a deficient number, since it is larger than the sum of its proper divisors (199462039).

1320241321 is a wasteful number, since it uses less digits than its factorization.

1320241321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357023.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1320241321 is about 36335.1251683547. The cubic root of 1320241321 is about 1097.0281548477.

Adding to 1320241321 its reverse (1231420231), we get a palindrome (2551661552).

The spelling of 1320241321 in words is "one billion, three hundred twenty million, two hundred forty-one thousand, three hundred twenty-one".