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13245313 = 67319681
BaseRepresentation
bin110010100001…
…101110000001
3220220221011011
4302201232001
511342322223
61151520521
7220404034
oct62415601
926827134
1013245313
117527444
124529141
132989a83
141a8b01b
15126980d
hexca1b81

13245313 has 4 divisors (see below), whose sum is σ = 13265668. Its totient is φ = 13224960.

The previous prime is 13245311. The next prime is 13245317. The reversal of 13245313 is 31354231.

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 9684544 + 3560769 = 3112^2 + 1887^2 .

It is a cyclic number.

It is not a de Polignac number, because 13245313 - 21 = 13245311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13245311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9168 + ... + 10513.

It is an arithmetic number, because the mean of its divisors is an integer number (3316417).

Almost surely, 213245313 is an apocalyptic number.

It is an amenable number.

13245313 is a deficient number, since it is larger than the sum of its proper divisors (20355).

13245313 is an equidigital number, since it uses as much as digits as its factorization.

13245313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20354.

The product of its digits is 1080, while the sum is 22.

The square root of 13245313 is about 3639.4110787324. The cubic root of 13245313 is about 236.6032696244.

Adding to 13245313 its reverse (31354231), we get a palindrome (44599544).

The spelling of 13245313 in words is "thirteen million, two hundred forty-five thousand, three hundred thirteen".

Divisors: 1 673 19681 13245313