1313355443 has 2 divisors, whose sum is σ = 1313355444. Its totient is φ = 1313355442.

The previous prime is 1313355427. The next prime is 1313355469. The reversal of 1313355443 is 3445533131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313355443 - 2⁴ = 1313355427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1313355403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656677721 + 656677722.

It is an arithmetic number, because the mean of its divisors is an integer number (656677722).

Almost surely, 2^1313355443 is an apocalyptic number.

1313355443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313355443 is an equidigital number, since it uses as much as digits as its factorization.

1313355443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 32.

The square root of 1313355443 is about 36240.2461774199. The cubic root of 1313355443 is about 1095.1176018199.

Adding to 1313355443 its reverse (3445533131), we get a palindrome (4758888574).

The spelling of 1313355443 in words is "one billion, three hundred thirteen million, three hundred fifty-five thousand, four hundred forty-three".