115405313 has 4 divisors (see below), whose sum is σ = 115748100. Its totient is φ = 115062528.

The previous prime is 115405309. The next prime is 115405319. The reversal of 115405313 is 313504511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313504511 = 1451 ⋅216061.

It can be written as a sum of positive squares in 2 ways, for example, as 15745024 + 99660289 = 3968^2 + 9983^2 .

It is a cyclic number.

It is not a de Polignac number, because 115405313 - 2² = 115405309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115405319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170888 + ... + 171561.

It is an arithmetic number, because the mean of its divisors is an integer number (28937025).

Almost surely, 2^115405313 is an apocalyptic number.

It is an amenable number.

115405313 is a deficient number, since it is larger than the sum of its proper divisors (342787).

115405313 is an equidigital number, since it uses as much as digits as its factorization.

115405313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342786.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 115405313 is about 10742.6864889561. The cubic root of 115405313 is about 486.8650517790.

Adding to 115405313 its reverse (313504511), we get a palindrome (428909824).

The spelling of 115405313 in words is "one hundred fifteen million, four hundred five thousand, three hundred thirteen".