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283113081 = 3231457009
BaseRepresentation
bin10000110111111…
…111011001111001
3201201201122010200
4100313333121321
51034434104311
644032032413
710005264366
oct2067773171
9651648120
10283113081
111358a0059
127a992709
1346867644
142985946d
1519cc5556
hex10dff679

283113081 has 6 divisors (see below), whose sum is σ = 408941130. Its totient is φ = 188742048.

The previous prime is 283113079. The next prime is 283113107. The reversal of 283113081 is 180311382.

It can be written as a sum of positive squares in only one way, i.e., 179989056 + 103124025 = 13416^2 + 10155^2 .

It is not a de Polignac number, because 283113081 - 21 = 283113079 is a prime.

It is a super-2 number, since 2×2831130812 = 160306033266625122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (283113781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15728496 + ... + 15728513.

It is an arithmetic number, because the mean of its divisors is an integer number (68156855).

Almost surely, 2283113081 is an apocalyptic number.

It is an amenable number.

283113081 is a deficient number, since it is larger than the sum of its proper divisors (125828049).

283113081 is a wasteful number, since it uses less digits than its factorization.

283113081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31457015 (or 31457012 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 283113081 is about 16825.9644894431. The cubic root of 283113081 is about 656.6288779248.

The spelling of 283113081 in words is "two hundred eighty-three million, one hundred thirteen thousand, eighty-one".

Divisors: 1 3 9 31457009 94371027 283113081