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BaseRepresentation
bin100111000100100…
…0101110111011101
310101100220000101012
41032021011313131
510141104144143
6334031225005
744326240301
oct11611056735
93340800335
101311006173
11613035384
12307078165
1317b7bc7c9
14c6187d01
157a166418
hex4e245ddd

1311006173 has 2 divisors, whose sum is σ = 1311006174. Its totient is φ = 1311006172.

The previous prime is 1311006149. The next prime is 1311006181. The reversal of 1311006173 is 3716001131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1258617529 + 52388644 = 35477^2 + 7238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1311006173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311006113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655503086 + 655503087.

It is an arithmetic number, because the mean of its divisors is an integer number (655503087).

Almost surely, 21311006173 is an apocalyptic number.

It is an amenable number.

1311006173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311006173 is an equidigital number, since it uses as much as digits as its factorization.

1311006173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1311006173 is about 36207.8192245819. The cubic root of 1311006173 is about 1094.4642467157.

The spelling of 1311006173 in words is "one billion, three hundred eleven million, six thousand, one hundred seventy-three".