Search a number
-
+
2931477305 = 52326118169
BaseRepresentation
bin1010111010111010…
…1100101100111001
321120022002110212112
42232232230230321
522000424233210
61202515422105
7132434101031
oct25656545471
97508073775
102931477305
111274819319
126998b4935
13379442273
141db48a8c1
1512255ad05
hexaebacb39

2931477305 has 24 divisors (see below), whose sum is σ = 3737859720. Its totient is φ = 2206321920.

The previous prime is 2931477299. The next prime is 2931477317. The reversal of 2931477305 is 5037741392.

It can be written as a sum of positive squares in 4 ways, for example, as 91546624 + 2839930681 = 9568^2 + 53291^2 .

It is not a de Polignac number, because 2931477305 - 222 = 2927283001 is a prime.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 152261 + ... + 170429.

It is an arithmetic number, because the mean of its divisors is an integer number (155744155).

Almost surely, 22931477305 is an apocalyptic number.

It is an amenable number.

2931477305 is a deficient number, since it is larger than the sum of its proper divisors (806382415).

2931477305 is a wasteful number, since it uses less digits than its factorization.

2931477305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18281 (or 18258 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 2931477305 is about 54143.1187225117. The cubic root of 2931477305 is about 1431.1841309350.

The spelling of 2931477305 in words is "two billion, nine hundred thirty-one million, four hundred seventy-seven thousand, three hundred five".

Divisors: 1 5 23 61 115 305 529 1403 2645 7015 18169 32269 90845 161345 417887 1108309 2089435 5541545 9611401 25491107 48057005 127455535 586295461 2931477305