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317494879 = 13128918947
BaseRepresentation
bin10010111011001…
…001011001011111
3211010102102002121
4102323021121133
51122234314004
651301003411
710603443022
oct2273113137
9733372077
10317494879
11153243669
128a3b3567
1350a14bc0
14302491b9
151cd17854
hex12ec965f

317494879 has 8 divisors (see below), whose sum is σ = 342200880. Its totient is φ = 292829376.

The previous prime is 317494867. The next prime is 317494943. The reversal of 317494879 is 978494713.

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 317494879 - 25 = 317494847 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 (317494819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7284 + ... + 26230.

It is an arithmetic number, because the mean of its divisors is an integer number (42775110).

Almost surely, 2317494879 is an apocalyptic number.

317494879 is a deficient number, since it is larger than the sum of its proper divisors (24706001).

317494879 is a wasteful number, since it uses less digits than its factorization.

317494879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20249.

The product of its digits is 1524096, while the sum is 52.

The square root of 317494879 is about 17818.3859819008. The cubic root of 317494879 is about 682.2008270724.

The spelling of 317494879 in words is "three hundred seventeen million, four hundred ninety-four thousand, eight hundred seventy-nine".

Divisors: 1 13 1289 16757 18947 246311 24422683 317494879