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315250213 = 2329472639
BaseRepresentation
bin10010110010100…
…101011000100101
3210222012100222211
4102302211120211
51121201001323
651140523421
710545403555
oct2262453045
9728170884
10315250213
11151a50173
12896b0571
135040a2b5
142dc23165
151ca2270d
hex12ca5625

315250213 has 8 divisors (see below), whose sum is σ = 340300800. Its totient is φ = 291145008.

The previous prime is 315250183. The next prime is 315250219. The reversal of 315250213 is 312052513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315250213 - 25 = 315250181 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 (315250219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235653 + ... + 236986.

It is an arithmetic number, because the mean of its divisors is an integer number (42537600).

Almost surely, 2315250213 is an apocalyptic number.

It is an amenable number.

315250213 is a deficient number, since it is larger than the sum of its proper divisors (25050587).

315250213 is a wasteful number, since it uses less digits than its factorization.

315250213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472691.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 315250213 is about 17755.2869027791. The cubic root of 315250213 is about 680.5893197145.

The spelling of 315250213 in words is "three hundred fifteen million, two hundred fifty thousand, two hundred thirteen".

Divisors: 1 23 29 667 472639 10870697 13706531 315250213