Base | Representation |
---|---|
bin | 101110111110… |
… | …001001111101 |
3 | 212011120112221 |
4 | 232332021331 |
5 | 11123010323 |
6 | 1115525341 |
7 | 206442403 |
oct | 56761175 |
9 | 25146487 |
10 | 12313213 |
11 | 6a50110 |
12 | 4159851 |
13 | 2721733 |
14 | 18c7473 |
15 | 113355d |
hex | bbe27d |
12313213 has 8 divisors (see below), whose sum is σ = 13566816. Its totient is φ = 11082000.
The previous prime is 12313187. The next prime is 12313229. The reversal of 12313213 is 31231321.
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 12313213 - 25 = 12313181 is a prime.
It is a Duffinian number.
It is a plaindrome in base 15.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12313283) 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, 4431 + ... + 6652.
It is an arithmetic number, because the mean of its divisors is an integer number (1695852).
Almost surely, 212313213 is an apocalyptic number.
It is an amenable number.
12313213 is a deficient number, since it is larger than the sum of its proper divisors (1253603).
12313213 is a wasteful number, since it uses less digits than its factorization.
12313213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11195.
The product of its digits is 108, while the sum is 16.
The square root of 12313213 is about 3509.0188087270. The cubic root of 12313213 is about 230.9176508502.
Adding to 12313213 its reverse (31231321), we get a palindrome (43544534).
It can be divided in two parts, 1231321 and 3, that multiplied together give a palindrome (3693963).
The spelling of 12313213 in words is "twelve million, three hundred thirteen thousand, two hundred thirteen".
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