1313230313 has 4 divisors (see below), whose sum is σ = 1313677380. Its totient is φ = 1312783248.

The previous prime is 1313230309. The next prime is 1313230393. The reversal of 1313230313 is 3130323131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 657255769 + 655974544 = 25637^2 + 25612^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313230313 - 2² = 1313230309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313230393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219098 + ... + 225011.

It is an arithmetic number, because the mean of its divisors is an integer number (328419345).

Almost surely, 2^1313230313 is an apocalyptic number.

It is an amenable number.

1313230313 is a deficient number, since it is larger than the sum of its proper divisors (447067).

1313230313 is an equidigital number, since it uses as much as digits as its factorization.

1313230313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447066.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1313230313 is about 36238.5197407400. The cubic root of 1313230313 is about 1095.0828215887.

Adding to 1313230313 its reverse (3130323131), we get a palindrome (4443553444).

The spelling of 1313230313 in words is "one billion, three hundred thirteen million, two hundred thirty thousand, three hundred thirteen".