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13031214 = 2371718251
BaseRepresentation
bin110001101101…
…011100101110
3220112001110120
4301231130232
511313444324
61143145410
7215522610
oct61553456
926461416
1013031214
1173a05a9
124445266
1329134a1
141a32db0
151226179
hexc6d72e

13031214 has 32 divisors (see below), whose sum is σ = 31539456. Its totient is φ = 3504000.

The previous prime is 13031201. The next prime is 13031233. The reversal of 13031214 is 41213031.

It is a junction number, because it is equal to n+sod(n) for n = 13031193 and 13031202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8412 + ... + 9839.

It is an arithmetic number, because the mean of its divisors is an integer number (985608).

Almost surely, 213031214 is an apocalyptic number.

13031214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13031214 is an abundant number, since it is smaller than the sum of its proper divisors (18508242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13031214 is a wasteful number, since it uses less digits than its factorization.

13031214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18280.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13031214 is about 3609.8772832328. The cubic root of 13031214 is about 235.3215095341.

Adding to 13031214 its reverse (41213031), we get a palindrome (54244245).

The spelling of 13031214 in words is "thirteen million, thirty-one thousand, two hundred fourteen".

Divisors: 1 2 3 6 7 14 17 21 34 42 51 102 119 238 357 714 18251 36502 54753 109506 127757 255514 310267 383271 620534 766542 930801 1861602 2171869 4343738 6515607 13031214