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13231301 = 27134877
BaseRepresentation
bin110010011110…
…010011000101
3220220012221012
4302132103011
511341400201
61151332005
7220315136
oct62362305
926805835
1013231301
117517966
124521005
132983595
141a85c8d
1512655bb
hexc9e4c5

13231301 has 4 divisors (see below), whose sum is σ = 13238892. Its totient is φ = 13223712.

The previous prime is 13231297. The next prime is 13231313. The reversal of 13231301 is 10313231.

13231301 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10313231 = 89115879.

It can be written as a sum of positive squares in 2 ways, for example, as 9424900 + 3806401 = 3070^2 + 1951^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231301 - 22 = 13231297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231331) 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, 275 + ... + 5151.

It is an arithmetic number, because the mean of its divisors is an integer number (3309723).

Almost surely, 213231301 is an apocalyptic number.

It is an amenable number.

13231301 is a deficient number, since it is larger than the sum of its proper divisors (7591).

13231301 is an equidigital number, since it uses as much as digits as its factorization.

13231301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7590.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 13231301 is about 3637.4855326173. The cubic root of 13231301 is about 236.5198072766.

Adding to 13231301 its reverse (10313231), we get a palindrome (23544532).

The spelling of 13231301 in words is "thirteen million, two hundred thirty-one thousand, three hundred one".

Divisors: 1 2713 4877 13231301