Base | Representation |
---|---|
bin | 1000001000010011010011 |
3 | 11000021101200 |
4 | 20020103103 |
5 | 1021144110 |
6 | 113402243 |
7 | 24054165 |
oct | 10102323 |
9 | 4007350 |
10 | 2131155 |
11 | 1226194 |
12 | 869383 |
13 | 598050 |
14 | 3d6935 |
15 | 2c16c0 |
hex | 2084d3 |
2131155 has 24 divisors (see below), whose sum is σ = 3979248. Its totient is φ = 1048896.
The previous prime is 2131141. The next prime is 2131193. The reversal of 2131155 is 5511312.
It is not a de Polignac number, because 2131155 - 211 = 2129107 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1237 + ... + 2406.
It is an arithmetic number, because the mean of its divisors is an integer number (165802).
22131155 is an apocalyptic number.
2131155 is a deficient number, since it is larger than the sum of its proper divisors (1848093).
2131155 is a wasteful number, since it uses less digits than its factorization.
2131155 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3667 (or 3664 counting only the distinct ones).
The product of its digits is 150, while the sum is 18.
The square root of 2131155 is about 1459.8475947852. The cubic root of 2131155 is about 128.6880872400.
Adding to 2131155 its reverse (5511312), we get a palindrome (7642467).
The spelling of 2131155 in words is "two million, one hundred thirty-one thousand, one hundred fifty-five".
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