1313205343 has 2 divisors, whose sum is σ = 1313205344. Its totient is φ = 1313205342.

The previous prime is 1313205331. The next prime is 1313205371. The reversal of 1313205343 is 3435023131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313205343 - 2²¹ = 1311108191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313205323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656602671 + 656602672.

It is an arithmetic number, because the mean of its divisors is an integer number (656602672).

Almost surely, 2^1313205343 is an apocalyptic number.

1313205343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313205343 is an equidigital number, since it uses as much as digits as its factorization.

1313205343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 1313205343 is about 36238.1752161998. The cubic root of 1313205343 is about 1095.0758808434.

Adding to 1313205343 its reverse (3435023131), we get a palindrome (4748228474).

The spelling of 1313205343 in words is "one billion, three hundred thirteen million, two hundred five thousand, three hundred forty-three".