13115713 has 4 divisors (see below), whose sum is σ = 14124628. Its totient is φ = 12106800.

The previous prime is 13115693. The next prime is 13115717. The reversal of 13115713 is 31751131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31751131 = 73 ⋅434947.

It can be written as a sum of positive squares in 2 ways, for example, as 2663424 + 10452289 = 1632^2 + 3233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13115713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13115717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504438 + ... + 504463.

It is an arithmetic number, because the mean of its divisors is an integer number (3531157).

Almost surely, 2^13115713 is an apocalyptic number.

13115713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13115713 is a deficient number, since it is larger than the sum of its proper divisors (1008915).

13115713 is a wasteful number, since it uses less digits than its factorization.

13115713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008914.

The product of its digits is 315, while the sum is 22.

The square root of 13115713 is about 3621.5622319656. The cubic root of 13115713 is about 235.8290500484.

Adding to 13115713 its reverse (31751131), we get a palindrome (44866844).

The spelling of 13115713 in words is "thirteen million, one hundred fifteen thousand, seven hundred thirteen".