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315275530 = 25294723131
BaseRepresentation
bin10010110010101…
…011100100001010
3210222020122201111
4102302223210022
51121202304110
651141240534
710545540433
oct2262534412
9728218644
10315275530
11151a68199
128970314a
135041898b
142dc2c48a
151ca29e8a
hex12cab90a

315275530 has 32 divisors (see below), whose sum is σ = 599581440. Its totient is φ = 119165760.

The previous prime is 315275461. The next prime is 315275551. The reversal of 315275530 is 35572513.

It is a junction number, because it is equal to n+sod(n) for n = 315275492 and 315275501.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2065 + ... + 25195.

It is an arithmetic number, because the mean of its divisors is an integer number (18736920).

Almost surely, 2315275530 is an apocalyptic number.

315275530 is a deficient number, since it is larger than the sum of its proper divisors (284305910).

315275530 is a wasteful number, since it uses less digits than its factorization.

315275530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23214.

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 315275530 is about 17755.9998310430. Note that the first 3 decimals coincide. The cubic root of 315275530 is about 680.6075380671.

The spelling of 315275530 in words is "three hundred fifteen million, two hundred seventy-five thousand, five hundred thirty".

Divisors: 1 2 5 10 29 47 58 94 145 235 290 470 1363 2726 6815 13630 23131 46262 115655 231310 670799 1087157 1341598 2174314 3353995 5435785 6707990 10871570 31527553 63055106 157637765 315275530