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101868143 = 1343118181
BaseRepresentation
bin1100001001001…
…10001001101111
321002200102211012
412010212021233
5202034240033
614035215435
72344602446
oct604461157
9232612735
10101868143
1152558053
122a14757b
1318148c10
14d759d5d
158e23248
hex612626f

101868143 has 8 divisors (see below), whose sum is σ = 109964736. Its totient is φ = 93808800.

The previous prime is 101868121. The next prime is 101868157. The reversal of 101868143 is 341868101.

It is a happy number.

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 101868143 - 26 = 101868079 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 (101868343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3488 + ... + 14693.

It is an arithmetic number, because the mean of its divisors is an integer number (13745592).

Almost surely, 2101868143 is an apocalyptic number.

101868143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

101868143 is a deficient number, since it is larger than the sum of its proper divisors (8096593).

101868143 is a wasteful number, since it uses less digits than its factorization.

101868143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18625.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 101868143 is about 10092.9749330908. The cubic root of 101868143 is about 467.0314529297.

The spelling of 101868143 in words is "one hundred one million, eight hundred sixty-eight thousand, one hundred forty-three".

Divisors: 1 13 431 5603 18181 236353 7836011 101868143