1310332321 has 4 divisors (see below), whose sum is σ = 1379297200. Its totient is φ = 1241367444.

The previous prime is 1310332313. The next prime is 1310332327. The reversal of 1310332321 is 1232330131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1310332321 - 2³ = 1310332313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 68964859 = 1310332321 / (1 + 3 + 1 + 0 + 3 + 3 + 2 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1310332327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34482411 + ... + 34482448.

It is an arithmetic number, because the mean of its divisors is an integer number (344824300).

Almost surely, 2^1310332321 is an apocalyptic number.

It is an amenable number.

1310332321 is a deficient number, since it is larger than the sum of its proper divisors (68964879).

1310332321 is an equidigital number, since it uses as much as digits as its factorization.

1310332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68964878.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1310332321 is about 36198.5126904407. The cubic root of 1310332321 is about 1094.2766978108.

Adding to 1310332321 its reverse (1232330131), we get a palindrome (2542662452).

The spelling of 1310332321 in words is "one billion, three hundred ten million, three hundred thirty-two thousand, three hundred twenty-one".