Search a number
-
+
12910313 = 139291069
BaseRepresentation
bin110001001111…
…111011101001
3220021220121202
4301033323221
511301112223
61140413545
7214510253
oct61177351
926256552
1012910313
117318789
1243a72b5
1328a0450
141a00cd3
151200428
hexc4fee9

12910313 has 8 divisors (see below), whose sum is σ = 13931400. Its totient is φ = 11893248.

The previous prime is 12910301. The next prime is 12910351. The reversal of 12910313 is 31301921.

It can be written as a sum of positive squares in 4 ways, for example, as 258064 + 12652249 = 508^2 + 3557^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12910313 - 28 = 12910057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12910013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11543 + ... + 12611.

It is an arithmetic number, because the mean of its divisors is an integer number (1741425).

Almost surely, 212910313 is an apocalyptic number.

12910313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12910313 is a deficient number, since it is larger than the sum of its proper divisors (1021087).

12910313 is a wasteful number, since it uses less digits than its factorization.

12910313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 12910313 is about 3593.0924007044. The cubic root of 12910313 is about 234.5914918881.

The spelling of 12910313 in words is "twelve million, nine hundred ten thousand, three hundred thirteen".

Divisors: 1 13 929 1069 12077 13897 993101 12910313