91103 has 8 divisors (see below), whose sum is σ = 101088. Its totient is φ = 81664.
The previous prime is 91099. The next prime is 91121. The reversal of 91103 is 30119.
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 91103 - 22 = 91099 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 (91153) 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, 275 + ... + 507.
It is an arithmetic number, because the mean of its divisors is an integer number (12636).
291103 is an apocalyptic number.
91103 is a deficient number, since it is larger than the sum of its proper divisors (9985).
91103 is a wasteful number, since it uses less digits than its factorization.
91103 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 273.
The product of its (nonzero) digits is 27, while the sum is 14.
The square root of 91103 is about 301.8327351365. The cubic root of 91103 is about 44.9963783093.
The spelling of 91103 in words is "ninety-one thousand, one hundred three".
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