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13124231 = 195313033
BaseRepresentation
bin110010000100…
…001010000111
3220200210001122
4302010022013
511324433411
61145144155
7216361031
oct62041207
926623048
1013124231
11745447a
12448b05b
132946923
141a58c51
1512439db
hexc84287

13124231 has 8 divisors (see below), whose sum is σ = 14076720. Its totient is φ = 12197952.

The previous prime is 13124227. The next prime is 13124263. The reversal of 13124231 is 13242131.

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

It is a cyclic number.

It is not a de Polignac number, because 13124231 - 22 = 13124227 is a prime.

It is a super-2 number, since 2×131242312 = 344490878682722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124201) 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, 5510 + ... + 7523.

It is an arithmetic number, because the mean of its divisors is an integer number (1759590).

Almost surely, 213124231 is an apocalyptic number.

13124231 is a deficient number, since it is larger than the sum of its proper divisors (952489).

13124231 is a wasteful number, since it uses less digits than its factorization.

13124231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13105.

The product of its digits is 144, while the sum is 17.

The square root of 13124231 is about 3622.7380529097. The cubic root of 13124231 is about 235.8800920602.

Adding to 13124231 its reverse (13242131), we get a palindrome (26366362).

The spelling of 13124231 in words is "thirteen million, one hundred twenty-four thousand, two hundred thirty-one".

Divisors: 1 19 53 1007 13033 247627 690749 13124231