256115303 has 4 divisors (see below), whose sum is σ = 256241160. Its totient is φ = 255989448.

The previous prime is 256115297. The next prime is 256115309. The reversal of 256115303 is 303511652.

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 (256115297) and next prime (256115309).

It is a cyclic number.

It is not a de Polignac number, because 256115303 - 2⁴ = 256115287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256115309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59825 + ... + 63962.

It is an arithmetic number, because the mean of its divisors is an integer number (64060290).

Almost surely, 2^256115303 is an apocalyptic number.

256115303 is a deficient number, since it is larger than the sum of its proper divisors (125857).

256115303 is a wasteful number, since it uses less digits than its factorization.

256115303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125856.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 256115303 is about 16003.6028131168. The cubic root of 256115303 is about 635.0557356993.

Adding to 256115303 its reverse (303511652), we get a palindrome (559626955).

The spelling of 256115303 in words is "two hundred fifty-six million, one hundred fifteen thousand, three hundred three".