Search a number
-
+
30181803293 is a prime number
BaseRepresentation
bin11100000110111110…
…011100010100011101
32212220102101110121102
4130012332130110131
5443303020201133
621510524442445
72115635044415
oct340676342435
985812343542
1030181803293
1111888928594
125a239a9425
132accc4aa05
141664651645
15bb9a8b7e8
hex706f9c51d

30181803293 has 2 divisors, whose sum is σ = 30181803294. Its totient is φ = 30181803292.

The previous prime is 30181803283. The next prime is 30181803361. The reversal of 30181803293 is 39230818103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28722792484 + 1459010809 = 169478^2 + 38197^2 .

It is an emirp because it is prime and its reverse (39230818103) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30181803293 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 (30181803203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15090901646 + 15090901647.

It is an arithmetic number, because the mean of its divisors is an integer number (15090901647).

Almost surely, 230181803293 is an apocalyptic number.

It is an amenable number.

30181803293 is a deficient number, since it is larger than the sum of its proper divisors (1).

30181803293 is an equidigital number, since it uses as much as digits as its factorization.

30181803293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 30181803293 in words is "thirty billion, one hundred eighty-one million, eight hundred three thousand, two hundred ninety-three".