1314331321 has 4 divisors (see below), whose sum is σ = 1314512100. Its totient is φ = 1314150544.

The previous prime is 1314331313. The next prime is 1314331379. The reversal of 1314331321 is 1231334131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1231334131 = 181 ⋅6802951.

It can be written as a sum of positive squares in 2 ways, for example, as 251571321 + 1062760000 = 15861^2 + 32600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1314331321 - 2³ = 1314331313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1314331292 and 1314331301.

It is not an unprimeable number, because it can be changed into a prime (1314331391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79006 + ... + 94183.

It is an arithmetic number, because the mean of its divisors is an integer number (328628025).

Almost surely, 2^1314331321 is an apocalyptic number.

It is an amenable number.

1314331321 is a deficient number, since it is larger than the sum of its proper divisors (180779).

1314331321 is an equidigital number, since it uses as much as digits as its factorization.

1314331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180778.

The product of its digits is 648, while the sum is 22.

The square root of 1314331321 is about 36253.7076862491. The cubic root of 1314331321 is about 1095.3887740537.

Adding to 1314331321 its reverse (1231334131), we get a palindrome (2545665452).

The spelling of 1314331321 in words is "one billion, three hundred fourteen million, three hundred thirty-one thousand, three hundred twenty-one".