13135513 has 4 divisors (see below), whose sum is σ = 13415040. Its totient is φ = 12855988.

The previous prime is 13135477. The next prime is 13135519. The reversal of 13135513 is 31553131.

13135513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31553131 = 29 ⋅1088039.

It is a cyclic number.

It is not a de Polignac number, because 13135513 - 2¹³ = 13127321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13135519) 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, 139693 + ... + 139786.

It is an arithmetic number, because the mean of its divisors is an integer number (3353760).

Almost surely, 2^13135513 is an apocalyptic number.

It is an amenable number.

13135513 is a deficient number, since it is larger than the sum of its proper divisors (279527).

13135513 is an equidigital number, since it uses as much as digits as its factorization.

13135513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279526.

The product of its digits is 675, while the sum is 22.

The square root of 13135513 is about 3624.2948279631. The cubic root of 13135513 is about 235.9476626735.

Adding to 13135513 its reverse (31553131), we get a palindrome (44688644).

The spelling of 13135513 in words is "thirteen million, one hundred thirty-five thousand, five hundred thirteen".