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13115307 = 38949121
BaseRepresentation
bin110010000001…
…111110101011
3220200022211010
4302001332223
511324142212
61145035003
7216323022
oct62017653
926608733
1013115307
1174487a7
124485a63
13294284a
141a558b9
15124103c
hexc81fab

13115307 has 8 divisors (see below), whose sum is σ = 17683920. Its totient is φ = 8645120.

The previous prime is 13115293. The next prime is 13115321. The reversal of 13115307 is 70351131.

It is an interprime number because it is at equal distance from previous prime (13115293) and next prime (13115321).

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 13115307 - 26 = 13115243 is a prime.

It is a super-2 number, since 2×131153072 = 344022555408498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13116307) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24294 + ... + 24827.

It is an arithmetic number, because the mean of its divisors is an integer number (2210490).

Almost surely, 213115307 is an apocalyptic number.

13115307 is a deficient number, since it is larger than the sum of its proper divisors (4568613).

13115307 is an equidigital number, since it uses as much as digits as its factorization.

13115307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49213.

The product of its (nonzero) digits is 315, while the sum is 21.

The square root of 13115307 is about 3621.5061783739. The cubic root of 13115307 is about 235.8266166419.

Adding to 13115307 its reverse (70351131), we get a palindrome (83466438).

The spelling of 13115307 in words is "thirteen million, one hundred fifteen thousand, three hundred seven".

Divisors: 1 3 89 267 49121 147363 4371769 13115307