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13420313 = 14239431
BaseRepresentation
bin110011001100…
…011100011001
3221020211012122
4303030130121
511413422223
61155351025
7222033164
oct63143431
927224178
1013420313
117636975
1245b2475
132a1b61a
141ad4adb
1512a15c8
hexccc719

13420313 has 4 divisors (see below), whose sum is σ = 13431168. Its totient is φ = 13409460.

The previous prime is 13420291. The next prime is 13420321. The reversal of 13420313 is 31302431.

It is a happy number.

13420313 is digitally balanced in base 2, because in such base 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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31302431 = 75141681.

It is a cyclic number.

It is not a de Polignac number, because 13420313 - 212 = 13416217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13420291 and 13420300.

It is not an unprimeable number, because it can be changed into a prime (13422313) 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, 3293 + ... + 6138.

It is an arithmetic number, because the mean of its divisors is an integer number (3357792).

Almost surely, 213420313 is an apocalyptic number.

It is an amenable number.

13420313 is a deficient number, since it is larger than the sum of its proper divisors (10855).

13420313 is an equidigital number, since it uses as much as digits as its factorization.

13420313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10854.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13420313 is about 3663.3745372266. The cubic root of 13420313 is about 237.6407321043.

Adding to 13420313 its reverse (31302431), we get a palindrome (44722744).

The spelling of 13420313 in words is "thirteen million, four hundred twenty thousand, three hundred thirteen".

Divisors: 1 1423 9431 13420313