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315124282 = 21146330937
BaseRepresentation
bin10010110010000…
…110101000111010
3210221221222020201
4102302012220322
51121132434112
651134112414
710544340454
oct2262065072
9727858221
10315124282
111519745a0
128964b70a
1350394b95
142dbcd2d4
151c9ea257
hex12c86a3a

315124282 has 16 divisors (see below), whose sum is σ = 516788352. Its totient is φ = 142924320.

The previous prime is 315124241. The next prime is 315124289. The reversal of 315124282 is 282421513.

It is a self number, because there is not a number n which added to its sum of digits gives 315124282.

It is not an unprimeable number, because it can be changed into a prime (315124289) 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, 5283 + ... + 25654.

It is an arithmetic number, because the mean of its divisors is an integer number (32299272).

Almost surely, 2315124282 is an apocalyptic number.

315124282 is a deficient number, since it is larger than the sum of its proper divisors (201664070).

315124282 is a wasteful number, since it uses less digits than its factorization.

315124282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31413.

The product of its digits is 3840, while the sum is 28.

The square root of 315124282 is about 17751.7402527189. The cubic root of 315124282 is about 680.4986840808.

Adding to 315124282 its reverse (282421513), we get a palindrome (597545795).

The spelling of 315124282 in words is "three hundred fifteen million, one hundred twenty-four thousand, two hundred eighty-two".

Divisors: 1 2 11 22 463 926 5093 10186 30937 61874 340307 680614 14323831 28647662 157562141 315124282