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BaseRepresentation
bin101101010000101
31011210021
411222011
51220143
6255141
7124363
oct55205
934707
1023173
1116457
12114b1
13a717
148633
156ced
hex5a85

23173 has 2 divisors, whose sum is σ = 23174. Its totient is φ = 23172.

The previous prime is 23167. The next prime is 23189. The reversal of 23173 is 37132.

It is an a-pointer prime, because the next prime (23189) can be obtained adding 23173 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12769 + 10404 = 113^2 + 102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23173 is a prime.

23173 is a lucky number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11586 + 11587.

It is an arithmetic number, because the mean of its divisors is an integer number (11587).

223173 is an apocalyptic number.

It is an amenable number.

23173 is a deficient number, since it is larger than the sum of its proper divisors (1).

23173 is an equidigital number, since it uses as much as digits as its factorization.

23173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126, while the sum is 16.

The square root of 23173 is about 152.2268044728. The cubic root of 23173 is about 28.5097945201.

It can be divided in two parts, 23 and 173, that added together give a square (196 = 142).

The spelling of 23173 in words is "twenty-three thousand, one hundred seventy-three", and thus it is an iban number.