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208471313 = 5325115671
BaseRepresentation
bin11000110110100…
…00010100010001
3112112021102212202
430123100110101
5411332040223
632404132545
75110656041
oct1433202421
9475242782
10208471313
11a7749646
1259997155
133426210b
141d989721
151347e428
hexc6d0511

208471313 has 8 divisors (see below), whose sum is σ = 213264576. Its totient is φ = 203710000.

The previous prime is 208471303. The next prime is 208471321. The reversal of 208471313 is 313174802.

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 208471313 - 24 = 208471297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208471303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5468 + ... + 21138.

It is an arithmetic number, because the mean of its divisors is an integer number (26658072).

Almost surely, 2208471313 is an apocalyptic number.

It is an amenable number.

208471313 is a deficient number, since it is larger than the sum of its proper divisors (4793263).

208471313 is a wasteful number, since it uses less digits than its factorization.

208471313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15975.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 208471313 is about 14438.5356944532. The cubic root of 208471313 is about 592.9463962535.

The spelling of 208471313 in words is "two hundred eight million, four hundred seventy-one thousand, three hundred thirteen".

Divisors: 1 53 251 13303 15671 830563 3933421 208471313