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68313115 = 5138231277
BaseRepresentation
bin1000001001001…
…10000000011011
311202112122222101
410010212000123
5114442004430
610440104231
71456436413
oct404460033
9152478871
1068313115
1135619722
121aa65077
13111caa80
149103643
155ee5dca
hex412601b

68313115 has 16 divisors (see below), whose sum is σ = 88458048. Its totient is φ = 50345856.

The previous prime is 68313109. The next prime is 68313121. The reversal of 68313115 is 51131386.

It is an interprime number because it is at equal distance from previous prime (68313109) and next prime (68313121).

It is a cyclic number.

It is not a de Polignac number, because 68313115 - 25 = 68313083 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52857 + ... + 54133.

It is an arithmetic number, because the mean of its divisors is an integer number (5528628).

Almost surely, 268313115 is an apocalyptic number.

68313115 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68313115 is a deficient number, since it is larger than the sum of its proper divisors (20144933).

68313115 is a wasteful number, since it uses less digits than its factorization.

68313115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118.

The product of its digits is 2160, while the sum is 28.

The square root of 68313115 is about 8265.1748317867. The cubic root of 68313115 is about 408.7910351057.

The spelling of 68313115 in words is "sixty-eight million, three hundred thirteen thousand, one hundred fifteen".

Divisors: 1 5 13 65 823 1277 4115 6385 10699 16601 53495 83005 1050971 5254855 13662623 68313115