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13023361 = 131001797
BaseRepresentation
bin110001101011…
…100010000001
3220111122200201
4301223202001
511313221421
61143045201
7215460661
oct61534201
926448621
1013023361
11739570a
124440801
13290ca40
141a301a1
151223b91
hexc6b881

13023361 has 4 divisors (see below), whose sum is σ = 14025172. Its totient is φ = 12021552.

The previous prime is 13023289. The next prime is 13023383. The reversal of 13023361 is 16332031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16332031 = 33748463.

It can be written as a sum of positive squares in 2 ways, for example, as 640000 + 12383361 = 800^2 + 3519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13023361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13023391) 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, 500886 + ... + 500911.

It is an arithmetic number, because the mean of its divisors is an integer number (3506293).

Almost surely, 213023361 is an apocalyptic number.

It is an amenable number.

13023361 is a deficient number, since it is larger than the sum of its proper divisors (1001811).

13023361 is a wasteful number, since it uses less digits than its factorization.

13023361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001810.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 13023361 is about 3608.7894092064. The cubic root of 13023361 is about 235.2742294379.

Adding to 13023361 its reverse (16332031), we get a palindrome (29355392).

The spelling of 13023361 in words is "thirteen million, twenty-three thousand, three hundred sixty-one".

Divisors: 1 13 1001797 13023361