115723513 has 4 divisors (see below), whose sum is σ = 116311140. Its totient is φ = 115135888.

The previous prime is 115723501. The next prime is 115723523. The reversal of 115723513 is 315327511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315327511 = 2687 ⋅117353.

It can be written as a sum of positive squares in 2 ways, for example, as 76947984 + 38775529 = 8772^2 + 6227^2 .

It is a cyclic number.

It is not a de Polignac number, because 115723513 - 2⁹ = 115723001 is a prime.

It is a super-2 number, since 2×115723513² = 26783862922122338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115723523) 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, 293518 + ... + 293911.

It is an arithmetic number, because the mean of its divisors is an integer number (29077785).

Almost surely, 2^115723513 is an apocalyptic number.

It is an amenable number.

115723513 is a deficient number, since it is larger than the sum of its proper divisors (587627).

115723513 is an equidigital number, since it uses as much as digits as its factorization.

115723513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587626.

The product of its digits is 3150, while the sum is 28.

The square root of 115723513 is about 10757.4863699658. The cubic root of 115723513 is about 487.3121088770.

The spelling of 115723513 in words is "one hundred fifteen million, seven hundred twenty-three thousand, five hundred thirteen".