Base | Representation |
---|---|
bin | 111011110000101… |
… | …0001010000010011 |
3 | 12011202011020011220 |
4 | 1313201101100103 |
5 | 13101313211011 |
6 | 530550340123 |
7 | 100456001451 |
oct | 16741212023 |
9 | 5152136156 |
10 | 2005210131 |
11 | 939986061 |
12 | 47b65a643 |
13 | 25c57c992 |
14 | 1504539d1 |
15 | bb091506 |
hex | 77851413 |
2005210131 has 8 divisors (see below), whose sum is σ = 2682211584. Its totient is φ = 1332507720.
The previous prime is 2005210091. The next prime is 2005210157. The reversal of 2005210131 is 1310125002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2005210131 - 211 = 2005208083 is a prime.
It is a super-2 number, since 2×20052101312 = 8041735338930074322, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 2005210131.
It is not an unprimeable number, because it can be changed into a prime (2005210531) 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, 1073671 + ... + 1075536.
It is an arithmetic number, because the mean of its divisors is an integer number (335276448).
Almost surely, 22005210131 is an apocalyptic number.
2005210131 is a deficient number, since it is larger than the sum of its proper divisors (677001453).
2005210131 is a wasteful number, since it uses less digits than its factorization.
2005210131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2149521.
The product of its (nonzero) digits is 60, while the sum is 15.
The square root of 2005210131 is about 44779.5726978273. The cubic root of 2005210131 is about 1261.0141601890.
Adding to 2005210131 its reverse (1310125002), we get a palindrome (3315335133).
The spelling of 2005210131 in words is "two billion, five million, two hundred ten thousand, one hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.077 sec. • engine limits •