Search a number
-
+
130781753 is a prime number
BaseRepresentation
bin1111100101110…
…01001000111001
3100010002101211122
413302321020321
5231440004003
620551035025
73145424624
oct762711071
9303071748
10130781753
11679062a3
123796ba75
132113056b
1413524dbb
15b735238
hex7cb9239

130781753 has 2 divisors, whose sum is σ = 130781754. Its totient is φ = 130781752.

The previous prime is 130781719. The next prime is 130781771. The reversal of 130781753 is 357187031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90687529 + 40094224 = 9523^2 + 6332^2 .

It is an emirp because it is prime and its reverse (357187031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130781753 - 212 = 130777657 is a prime.

It is not a weakly prime, because it can be changed into another prime (130781773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65390876 + 65390877.

It is an arithmetic number, because the mean of its divisors is an integer number (65390877).

Almost surely, 2130781753 is an apocalyptic number.

It is an amenable number.

130781753 is a deficient number, since it is larger than the sum of its proper divisors (1).

130781753 is an equidigital number, since it uses as much as digits as its factorization.

130781753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 130781753 is about 11435.9850034879. The cubic root of 130781753 is about 507.5931096605.

The spelling of 130781753 in words is "one hundred thirty million, seven hundred eighty-one thousand, seven hundred fifty-three".