Base | Representation |
---|---|
bin | 110001101101… |
… | …011111110100 |
3 | 220112001201220 |
4 | 301231133310 |
5 | 11314001122 |
6 | 1143150340 |
7 | 215523312 |
oct | 61553764 |
9 | 26461656 |
10 | 13031412 |
11 | 73a0769 |
12 | 44453b0 |
13 | 29135c4 |
14 | 1a330b2 |
15 | 122625c |
hex | c6d7f4 |
13031412 has 24 divisors (see below), whose sum is σ = 30472512. Its totient is φ = 4334400.
The previous prime is 13031407. The next prime is 13031413. The reversal of 13031412 is 21413031.
It is a junction number, because it is equal to n+sod(n) for n = 13031391 and 13031400.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13031413) 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, 6712 + ... + 8432.
It is an arithmetic number, because the mean of its divisors is an integer number (1269688).
Almost surely, 213031412 is an apocalyptic number.
13031412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
13031412 is an abundant number, since it is smaller than the sum of its proper divisors (17441100).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13031412 is a wasteful number, since it uses less digits than its factorization.
13031412 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2359 (or 2357 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 13031412 is about 3609.9047078836. The cubic root of 13031412 is about 235.3227013755.
Adding to 13031412 its reverse (21413031), we get a palindrome (34444443).
The spelling of 13031412 in words is "thirteen million, thirty-one thousand, four hundred twelve".
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