1313143321 has 8 divisors (see below), whose sum is σ = 1503377280. Its totient is φ = 1123569888.

The previous prime is 1313143309. The next prime is 1313143327. The reversal of 1313143321 is 1233413131.

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

It is not a de Polignac number, because 1313143321 - 2⁷ = 1313143193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313143292 and 1313143301.

It is not an unprimeable number, because it can be changed into a prime (1313143327) 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, 160861 + ... + 168826.

It is an arithmetic number, because the mean of its divisors is an integer number (187922160).

Almost surely, 2^1313143321 is an apocalyptic number.

It is an amenable number.

1313143321 is a deficient number, since it is larger than the sum of its proper divisors (190233959).

1313143321 is an equidigital number, since it uses as much as digits as its factorization.

1313143321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330263.

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

The square root of 1313143321 is about 36237.3194510852. The cubic root of 1313143321 is about 1095.0586406187.

Adding to 1313143321 its reverse (1233413131), we get a palindrome (2546556452).

The spelling of 1313143321 in words is "one billion, three hundred thirteen million, one hundred forty-three thousand, three hundred twenty-one".