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81101083 = 719160659
BaseRepresentation
bin1001101010110…
…00000100011011
312122121100202211
410311120010123
5131230213313
612014135551
72003230210
oct465300433
9178540684
1081101083
1141863498
12231b15b7
1313a5760b
14aab1b07
1571bee3d
hex4d5811b

81101083 has 8 divisors (see below), whose sum is σ = 93173760. Its totient is φ = 69150120.

The previous prime is 81101051. The next prime is 81101113. The reversal of 81101083 is 38010118.

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 81101083 - 25 = 81101051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81161083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28993 + ... + 31666.

It is an arithmetic number, because the mean of its divisors is an integer number (11646720).

Almost surely, 281101083 is an apocalyptic number.

81101083 is a deficient number, since it is larger than the sum of its proper divisors (12072677).

81101083 is a wasteful number, since it uses less digits than its factorization.

81101083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60857.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 81101083 is about 9005.6139712959. The cubic root of 81101083 is about 432.8547801181.

The spelling of 81101083 in words is "eighty-one million, one hundred one thousand, eighty-three".

Divisors: 1 7 191 1337 60659 424613 11585869 81101083