115015313 has 4 divisors (see below), whose sum is σ = 131446080. Its totient is φ = 98584548.

The previous prime is 115015309. The next prime is 115015321. The reversal of 115015313 is 313510511.

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: 313510511 = 71 ⋅4415641.

It is a cyclic number.

It is not a de Polignac number, because 115015313 - 2² = 115015309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115015333) 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, 8215373 + ... + 8215386.

It is an arithmetic number, because the mean of its divisors is an integer number (32861520).

Almost surely, 2^115015313 is an apocalyptic number.

It is an amenable number.

115015313 is a deficient number, since it is larger than the sum of its proper divisors (16430767).

115015313 is an equidigital number, since it uses as much as digits as its factorization.

115015313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16430766.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 115015313 is about 10724.5192433041. The cubic root of 115015313 is about 486.3159965757.

Adding to 115015313 its reverse (313510511), we get a palindrome (428525824).

The spelling of 115015313 in words is "one hundred fifteen million, fifteen thousand, three hundred thirteen".