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13036231 = 131002787
BaseRepresentation
bin110001101110…
…101011000111
3220112022100101
4301232223013
511314124411
61143224531
7215543335
oct61565307
926468311
1013036231
1173a434a
124448147
132915860
141a34b55
1512278c1
hexc6eac7

13036231 has 4 divisors (see below), whose sum is σ = 14039032. Its totient is φ = 12033432.

The previous prime is 13036217. The next prime is 13036241. The reversal of 13036231 is 13263031.

13036231 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: 13263031 = 47927689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13036231 is a prime.

It is a super-2 number, since 2×130362312 = 339886637370722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13036199 and 13036208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13036201) 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, 501381 + ... + 501406.

It is an arithmetic number, because the mean of its divisors is an integer number (3509758).

Almost surely, 213036231 is an apocalyptic number.

13036231 is a deficient number, since it is larger than the sum of its proper divisors (1002801).

13036231 is a wasteful number, since it uses less digits than its factorization.

13036231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002800.

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

The square root of 13036231 is about 3610.5721153302. The cubic root of 13036231 is about 235.3517051484.

Adding to 13036231 its reverse (13263031), we get a palindrome (26299262).

The spelling of 13036231 in words is "thirteen million, thirty-six thousand, two hundred thirty-one".

Divisors: 1 13 1002787 13036231