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13302313 = 17782489
BaseRepresentation
bin110010101111…
…101000101001
3221000211100021
4302233220221
511401133223
61153040441
7221032153
oct62575051
927024307
1013302313
117566252
124556121
1329a99bb
141aa3ad3
15127b65d
hexcafa29

13302313 has 4 divisors (see below), whose sum is σ = 14084820. Its totient is φ = 12519808.

The previous prime is 13302307. The next prime is 13302323. The reversal of 13302313 is 31320331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9290304 + 4012009 = 3048^2 + 2003^2 .

It is a cyclic number.

It is not a de Polignac number, because 13302313 - 25 = 13302281 is a prime.

It is a super-2 number, since 2×133023132 = 353903062299938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13302323) 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 3 ways as a sum of consecutive naturals, for example, 391228 + ... + 391261.

It is an arithmetic number, because the mean of its divisors is an integer number (3521205).

Almost surely, 213302313 is an apocalyptic number.

It is an amenable number.

13302313 is a deficient number, since it is larger than the sum of its proper divisors (782507).

13302313 is an equidigital number, since it uses as much as digits as its factorization.

13302313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782506.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 13302313 is about 3647.2336091893. The cubic root of 13302313 is about 236.9421841440.

Adding to 13302313 its reverse (31320331), we get a palindrome (44622644).

The spelling of 13302313 in words is "thirteen million, three hundred two thousand, three hundred thirteen".

Divisors: 1 17 782489 13302313