71023 has 2 divisors, whose sum is σ = 71024. Its totient is φ = 71022.
The previous prime is 71011. The next prime is 71039. The reversal of 71023 is 32017.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 71023 - 25 = 70991 is a prime.
It is the 267-th Hogben number.
It is a plaindrome in base 16.
It is a junction number, because it is equal to n+sod(n) for n = 70994 and 71012.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (77023) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35511 + 35512.
It is an arithmetic number, because the mean of its divisors is an integer number (35512).
271023 is an apocalyptic number.
71023 is a deficient number, since it is larger than the sum of its proper divisors (1).
71023 is an equidigital number, since it uses as much as digits as its factorization.
71023 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 42, while the sum is 13.
The square root of 71023 is about 266.5014071257. The cubic root of 71023 is about 41.4126483170.
The spelling of 71023 in words is "seventy-one thousand, twenty-three", and thus it is an iban number.
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