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31741 is a prime number
BaseRepresentation
bin111101111111101
31121112121
413233331
52003431
6402541
7161353
oct75775
947477
1031741
1121936
1216451
13115a8
14b7d3
159611
hex7bfd

31741 has 2 divisors, whose sum is σ = 31742. Its totient is φ = 31740.

The previous prime is 31729. The next prime is 31751. The reversal of 31741 is 14713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29241 + 2500 = 171^2 + 50^2 .

It is an emirp because it is prime and its reverse (14713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31741 - 213 = 23549 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31721) 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 as a sum of consecutive naturals, namely, 15870 + 15871.

It is an arithmetic number, because the mean of its divisors is an integer number (15871).

231741 is an apocalyptic number.

It is an amenable number.

31741 is a deficient number, since it is larger than the sum of its proper divisors (1).

31741 is an equidigital number, since it uses as much as digits as its factorization.

31741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84, while the sum is 16.

The square root of 31741 is about 178.1600404131. The cubic root of 31741 is about 31.6621353935.

The spelling of 31741 in words is "thirty-one thousand, seven hundred forty-one".