315012317 has 4 divisors (see below), whose sum is σ = 315318300. Its totient is φ = 314706336.

The previous prime is 315012287. The next prime is 315012319. The reversal of 315012317 is 713210513.

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

It can be written as a sum of positive squares in 2 ways, for example, as 187525636 + 127486681 = 13694^2 + 11291^2 .

It is a cyclic number.

It is not a de Polignac number, because 315012317 - 2¹⁶ = 314946781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315012292 and 315012301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315012319) 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, 151442 + ... + 153507.

It is an arithmetic number, because the mean of its divisors is an integer number (78829575).

Almost surely, 2^315012317 is an apocalyptic number.

It is an amenable number.

315012317 is a deficient number, since it is larger than the sum of its proper divisors (305983).

315012317 is a wasteful number, since it uses less digits than its factorization.

315012317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305982.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 315012317 is about 17748.5863380721. The cubic root of 315012317 is about 680.4180798398.

The spelling of 315012317 in words is "three hundred fifteen million, twelve thousand, three hundred seventeen".