Base | Representation |
---|---|
bin | 110010010110… |
… | …111100111101 |
3 | 220211200122211 |
4 | 302112330331 |
5 | 11334414323 |
6 | 1150540421 |
7 | 220131334 |
oct | 62267475 |
9 | 26750584 |
10 | 13201213 |
11 | 74a72a3 |
12 | 4507711 |
13 | 297298c |
14 | 1a78d1b |
15 | 125b70d |
hex | c96f3d |
13201213 has 4 divisors (see below), whose sum is σ = 13213728. Its totient is φ = 13188700.
The previous prime is 13201189. The next prime is 13201217. The reversal of 13201213 is 31210231.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 13201213 - 29 = 13200701 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 13201193 and 13201202.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13201217) 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, 4513 + ... + 6838.
It is an arithmetic number, because the mean of its divisors is an integer number (3303432).
Almost surely, 213201213 is an apocalyptic number.
It is an amenable number.
13201213 is a deficient number, since it is larger than the sum of its proper divisors (12515).
13201213 is a wasteful number, since it uses less digits than its factorization.
13201213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12514.
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 13201213 is about 3633.3473547130. The cubic root of 13201213 is about 236.3403890665.
Adding to 13201213 its reverse (31210231), we get a palindrome (44411444).
The spelling of 13201213 in words is "thirteen million, two hundred one thousand, two hundred thirteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.075 sec. • engine limits •