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13202313 = 34400771
BaseRepresentation
bin110010010111…
…001110001001
3220211202011120
4302113032021
511334433223
61150545453
7220134465
oct62271611
926752146
1013202313
1174a8103
124508289
132973327
141a794a5
15125bbe3
hexc97389

13202313 has 4 divisors (see below), whose sum is σ = 17603088. Its totient is φ = 8801540.

The previous prime is 13202297. The next prime is 13202317. The reversal of 13202313 is 31320231.

13202313 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31320231 = 310440077.

It is a cyclic number.

It is not a de Polignac number, because 13202313 - 24 = 13202297 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13202292 and 13202301.

It is not an unprimeable number, because it can be changed into a prime (13202317) 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, 2200383 + ... + 2200388.

It is an arithmetic number, because the mean of its divisors is an integer number (4400772).

Almost surely, 213202313 is an apocalyptic number.

It is an amenable number.

13202313 is a deficient number, since it is larger than the sum of its proper divisors (4400775).

13202313 is an equidigital number, since it uses as much as digits as its factorization.

13202313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400774.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13202313 is about 3633.4987271224. The cubic root of 13202313 is about 236.3469532917.

Adding to 13202313 its reverse (31320231), we get a palindrome (44522544).

It can be divided in two parts, 1320231 and 3, that multiplied together give a palindrome (3960693).

The spelling of 13202313 in words is "thirteen million, two hundred two thousand, three hundred thirteen".

Divisors: 1 3 4400771 13202313