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13230321 = 313339239
BaseRepresentation
bin110010011110…
…000011110001
3220220011120220
4302132003301
511341332241
61151323253
7220312236
oct62360361
926804526
1013230321
117517155
124520529
132982cc0
141a8578d
151265166
hexc9e0f1

13230321 has 8 divisors (see below), whose sum is σ = 18997440. Its totient is φ = 8141712.

The previous prime is 13230307. The next prime is 13230341. The reversal of 13230321 is 12303231.

13230321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13230321 - 29 = 13229809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13230321.

It is not an unprimeable number, because it can be changed into a prime (13230341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169581 + ... + 169658.

It is an arithmetic number, because the mean of its divisors is an integer number (2374680).

Almost surely, 213230321 is an apocalyptic number.

It is an amenable number.

13230321 is a deficient number, since it is larger than the sum of its proper divisors (5767119).

13230321 is a wasteful number, since it uses less digits than its factorization.

13230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339255.

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

The square root of 13230321 is about 3637.3508216833. The cubic root of 13230321 is about 236.5139677114.

Adding to 13230321 its reverse (12303231), we get a palindrome (25533552).

The spelling of 13230321 in words is "thirteen million, two hundred thirty thousand, three hundred twenty-one".

Divisors: 1 3 13 39 339239 1017717 4410107 13230321