13515342013 has 4 divisors (see below), whose sum is σ = 13546555708. Its totient is φ = 13484128320.

The previous prime is 13515341999. The next prime is 13515342073. The reversal of 13515342013 is 31024351531.

It is a happy number.

13515342013 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 an emirpimes, since its reverse is a distinct semiprime: 31024351531 = 14867 ⋅2086793.

It can be written as a sum of positive squares in 2 ways, for example, as 7863610329 + 5651731684 = 88677^2 + 75178^2 .

It is a cyclic number.

It is not a de Polignac number, because 13515342013 - 2⁹ = 13515341501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13515342073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15606198 + ... + 15607063.

It is an arithmetic number, because the mean of its divisors is an integer number (3386638927).

Almost surely, 2^13515342013 is an apocalyptic number.

It is an amenable number.

13515342013 is a deficient number, since it is larger than the sum of its proper divisors (31213695).

13515342013 is an equidigital number, since it uses as much as digits as its factorization.

13515342013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31213694.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 13515342013 its reverse (31024351531), we get a palindrome (44539693544).

The spelling of 13515342013 in words is "thirteen billion, five hundred fifteen million, three hundred forty-two thousand, thirteen".