Search a number
-
+
6131871169 is a prime number
BaseRepresentation
bin1011011010111110…
…01110110111000001
3120211100012022220121
411231133032313001
5100024224334134
62452243140241
7304645021264
oct55537166701
916740168817
106131871169
112667310626
121231674681
137694bb148
14422538cdb
1525d4d5ab4
hex16d7cedc1

6131871169 has 2 divisors, whose sum is σ = 6131871170. Its totient is φ = 6131871168.

The previous prime is 6131871167. The next prime is 6131871223. The reversal of 6131871169 is 9611781316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5463131569 + 668739600 = 73913^2 + 25860^2 .

It is a cyclic number.

It is not a de Polignac number, because 6131871169 - 21 = 6131871167 is a prime.

It is a super-2 number, since 2×61318711692 = 75199688066426853122, which contains 22 as substring.

Together with 6131871167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6131871167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3065935584 + 3065935585.

It is an arithmetic number, because the mean of its divisors is an integer number (3065935585).

Almost surely, 26131871169 is an apocalyptic number.

It is an amenable number.

6131871169 is a deficient number, since it is larger than the sum of its proper divisors (1).

6131871169 is an equidigital number, since it uses as much as digits as its factorization.

6131871169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 43.

The square root of 6131871169 is about 78306.2651963430. The cubic root of 6131871169 is about 1830.3367818562.

The spelling of 6131871169 in words is "six billion, one hundred thirty-one million, eight hundred seventy-one thousand, one hundred sixty-nine".