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13321201 = 82916069
BaseRepresentation
bin110010110100…
…001111110001
3221001210020211
4302310033301
511402234301
61153304121
7221141215
oct62641761
927053224
1013321201
117579463
124565041
1329b548a
141aaa945
151282051
hexcb43f1

13321201 has 4 divisors (see below), whose sum is σ = 13338100. Its totient is φ = 13304304.

The previous prime is 13321181. The next prime is 13321211. The reversal of 13321201 is 10212331.

13321201 is digitally balanced in base 3, 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 an emirpimes, since its reverse is a distinct semiprime: 10212331 = 10399829.

It can be written as a sum of positive squares in 2 ways, for example, as 5475600 + 7845601 = 2340^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321201 - 25 = 13321169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321211) 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, 7206 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (3334525).

Almost surely, 213321201 is an apocalyptic number.

It is an amenable number.

13321201 is a deficient number, since it is larger than the sum of its proper divisors (16899).

13321201 is an equidigital number, since it uses as much as digits as its factorization.

13321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16898.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13321201 is about 3649.8220504567. The cubic root of 13321201 is about 237.0542761150.

Adding to 13321201 its reverse (10212331), we get a palindrome (23533532).

The spelling of 13321201 in words is "thirteen million, three hundred twenty-one thousand, two hundred one".

Divisors: 1 829 16069 13321201