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13000312 = 2313125003
BaseRepresentation
bin110001100101…
…111001111000
3220110111002001
4301211321320
511312002222
61142350344
7215333533
oct61457170
926414061
1013000312
11737a366
12442b3b4
1329023c0
141a25a1a
15121be27
hexc65e78

13000312 has 16 divisors (see below), whose sum is σ = 26250840. Its totient is φ = 6000096.

The previous prime is 13000307. The next prime is 13000327. The reversal of 13000312 is 21300031.

It is a super-2 number, since 2×130003122 = 338016224194688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62398 + ... + 62605.

Almost surely, 213000312 is an apocalyptic number.

It is an amenable number.

13000312 is an abundant number, since it is smaller than the sum of its proper divisors (13250528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13000312 is a wasteful number, since it uses less digits than its factorization.

13000312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125022 (or 125018 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 13000312 is about 3605.5945418197. The cubic root of 13000312 is about 235.1353498248.

Adding to 13000312 its reverse (21300031), we get a palindrome (34300343).

It can be divided in two parts, 1300031 and 2, that multiplied together give a palindrome (2600062).

The spelling of 13000312 in words is "thirteen million, three hundred twelve", and thus it is an aban number.

Divisors: 1 2 4 8 13 26 52 104 125003 250006 500012 1000024 1625039 3250078 6500156 13000312