1313112513 has 4 divisors (see below), whose sum is σ = 1750816688. Its totient is φ = 875408340.

The previous prime is 1313112503. The next prime is 1313112517. The reversal of 1313112513 is 3152113131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1313112513 - 2¹⁷ = 1312981441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313112513.

It is not an unprimeable number, because it can be changed into a prime (1313112517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218852083 + ... + 218852088.

It is an arithmetic number, because the mean of its divisors is an integer number (437704172).

Almost surely, 2^1313112513 is an apocalyptic number.

It is an amenable number.

1313112513 is a deficient number, since it is larger than the sum of its proper divisors (437704175).

1313112513 is an equidigital number, since it uses as much as digits as its factorization.

1313112513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437704174.

The product of its digits is 270, while the sum is 21.

The square root of 1313112513 is about 36236.8943619621. The cubic root of 1313112513 is about 1095.0500767324.

Adding to 1313112513 its reverse (3152113131), we get a palindrome (4465225644).

The spelling of 1313112513 in words is "one billion, three hundred thirteen million, one hundred twelve thousand, five hundred thirteen".