1313343205 has 4 divisors (see below), whose sum is σ = 1576011852. Its totient is φ = 1050674560.

The previous prime is 1313343197. The next prime is 1313343209. The reversal of 1313343205 is 5023433131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5023433131 = 37 ⋅135768463.

It can be written as a sum of positive squares in 2 ways, for example, as 885598081 + 427745124 = 29759^2 + 20682^2 .

It is not a de Polignac number, because 1313343205 - 2³ = 1313343197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313343205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313343209) 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, 131334316 + ... + 131334325.

It is an arithmetic number, because the mean of its divisors is an integer number (394002963).

Almost surely, 2^1313343205 is an apocalyptic number.

It is an amenable number.

1313343205 is a deficient number, since it is larger than the sum of its proper divisors (262668647).

1313343205 is an equidigital number, since it uses as much as digits as its factorization.

1313343205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262668646.

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

The square root of 1313343205 is about 36240.0773315952. The cubic root of 1313343205 is about 1095.1142003312.

Adding to 1313343205 its reverse (5023433131), we get a palindrome (6336776336).

The spelling of 1313343205 in words is "one billion, three hundred thirteen million, three hundred forty-three thousand, two hundred five".