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13230313 = 23575231
BaseRepresentation
bin110010011110…
…000011101001
3220220011120121
4302132003221
511341332223
61151323241
7220312225
oct62360351
926804517
1013230313
117517148
124520521
132982cb5
141a85785
15126515d
hexc9e0e9

13230313 has 4 divisors (see below), whose sum is σ = 13805568. Its totient is φ = 12655060.

The previous prime is 13230307. The next prime is 13230341. The reversal of 13230313 is 31303231.

13230313 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 an emirpimes, since its reverse is a distinct semiprime: 31303231 = 53590627.

It is a de Polignac number, because none of the positive numbers 2k-13230313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13230383) 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, 287593 + ... + 287638.

It is an arithmetic number, because the mean of its divisors is an integer number (3451392).

Almost surely, 213230313 is an apocalyptic number.

It is an amenable number.

13230313 is a deficient number, since it is larger than the sum of its proper divisors (575255).

13230313 is an equidigital number, since it uses as much as digits as its factorization.

13230313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575254.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 13230313 is about 3637.3497219817. The cubic root of 13230313 is about 236.5139200403.

Adding to 13230313 its reverse (31303231), we get a palindrome (44533544).

The spelling of 13230313 in words is "thirteen million, two hundred thirty thousand, three hundred thirteen".

Divisors: 1 23 575231 13230313