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315142075 = 52195031319
BaseRepresentation
bin10010110010001…
…010111110111011
3210221222212122201
4102302022332323
51121134021300
651134331031
710544443363
oct2262127673
9727885581
10315142075
111519869a6
1289659a77
13503a0001
142dbd59a3
151ca0066a
hex12c8afbb

315142075 has 24 divisors (see below), whose sum is σ = 412473600. Its totient is φ = 238188960.

The previous prime is 315142049. The next prime is 315142109. The reversal of 315142075 is 570241513.

It is a happy number.

It is not a de Polignac number, because 315142075 - 213 = 315133883 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238266 + ... + 239584.

It is an arithmetic number, because the mean of its divisors is an integer number (17186400).

Almost surely, 2315142075 is an apocalyptic number.

315142075 is a deficient number, since it is larger than the sum of its proper divisors (97331525).

315142075 is a wasteful number, since it uses less digits than its factorization.

315142075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 315142075 is about 17752.2414077772. The cubic root of 315142075 is about 680.5114916046.

Adding to 315142075 its reverse (570241513), we get a palindrome (885383588).

The spelling of 315142075 in words is "three hundred fifteen million, one hundred forty-two thousand, seventy-five".

Divisors: 1 5 19 25 95 475 503 1319 2515 6595 9557 12575 25061 32975 47785 125305 238925 626525 663457 3317285 12605683 16586425 63028415 315142075