115403215 has 4 divisors (see below), whose sum is σ = 138483864. Its totient is φ = 92322568.

The previous prime is 115403203. The next prime is 115403227. The reversal of 115403215 is 512304511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (115403203) and next prime (115403227).

It is a cyclic number.

It is not a de Polignac number, because 115403215 - 2⁷ = 115403087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11540317 + ... + 11540326.

It is an arithmetic number, because the mean of its divisors is an integer number (34620966).

Almost surely, 2^115403215 is an apocalyptic number.

115403215 is a deficient number, since it is larger than the sum of its proper divisors (23080649).

115403215 is an equidigital number, since it uses as much as digits as its factorization.

115403215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23080648.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 115403215 is about 10742.5888406845. The cubic root of 115403215 is about 486.8621014554.

Adding to 115403215 its reverse (512304511), we get a palindrome (627707726).

The spelling of 115403215 in words is "one hundred fifteen million, four hundred three thousand, two hundred fifteen".