Base | Representation |
---|---|
bin | 1000010000001000… |
… | …0110001010001111 |
3 | 12201101011212121110 |
4 | 2010002012022033 |
5 | 14014034021111 |
6 | 1003450103103 |
7 | 105615253014 |
oct | 20402061217 |
9 | 5641155543 |
10 | 2215142031 |
11 | a37431aa3 |
12 | 519a1aa93 |
13 | 293c0383b |
14 | 17029d70b |
15 | ce70d5a6 |
hex | 8408628f |
2215142031 has 16 divisors (see below), whose sum is σ = 2967868160. Its totient is φ = 1469603520.
The previous prime is 2215142009. The next prime is 2215142077. The reversal of 2215142031 is 1302415122.
It is not a de Polignac number, because 2215142031 - 213 = 2215133839 is a prime.
It is a super-2 number, since 2×22151420312 = 9813708435005609922, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 2215141989 and 2215142007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2215141031) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957366 + ... + 959676.
It is an arithmetic number, because the mean of its divisors is an integer number (185491760).
Almost surely, 22215142031 is an apocalyptic number.
2215142031 is a deficient number, since it is larger than the sum of its proper divisors (752726129).
2215142031 is a wasteful number, since it uses less digits than its factorization.
2215142031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3726.
The product of its (nonzero) digits is 480, while the sum is 21.
The square root of 2215142031 is about 47065.2953990517. The cubic root of 2215142031 is about 1303.5685053372.
Adding to 2215142031 its reverse (1302415122), we get a palindrome (3517557153).
The spelling of 2215142031 in words is "two billion, two hundred fifteen million, one hundred forty-two thousand, thirty-one".
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