Base | Representation |
---|---|
bin | 111111001011110… |
… | …1001111010110111 |
3 | 12110202101202220220 |
4 | 1332113221322313 |
5 | 13320223131411 |
6 | 550213425423 |
7 | 103352544462 |
oct | 17627517267 |
9 | 5422352826 |
10 | 2120130231 |
11 | 99883824a |
12 | 4b203b273 |
13 | 27a31863b |
14 | 16180a2d9 |
15 | c61e1b06 |
hex | 7e5e9eb7 |
2120130231 has 16 divisors (see below), whose sum is σ = 3096338400. Its totient is φ = 1284405248.
The previous prime is 2120130217. The next prime is 2120130247. The reversal of 2120130231 is 1320310212.
It is a cyclic number.
It is not a de Polignac number, because 2120130231 - 211 = 2120128183 is a prime.
It is a super-2 number, since 2×21201302312 = 8989904392800226722, 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 2120130231.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2120130251) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715266 + ... + 718223.
It is an arithmetic number, because the mean of its divisors is an integer number (193521150).
Almost surely, 22120130231 is an apocalyptic number.
2120130231 is a deficient number, since it is larger than the sum of its proper divisors (976208169).
2120130231 is a wasteful number, since it uses less digits than its factorization.
2120130231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1433538.
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 2120130231 is about 46044.8719294559. The cubic root of 2120130231 is about 1284.6579620269.
Adding to 2120130231 its reverse (1320310212), we get a palindrome (3440440443).
The spelling of 2120130231 in words is "two billion, one hundred twenty million, one hundred thirty thousand, two hundred thirty-one".
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