Base | Representation |
---|---|
bin | 111111011110101… |
… | …1000101100001011 |
3 | 12111110000021200112 |
4 | 1332331120230023 |
5 | 13330241134011 |
6 | 551205424535 |
7 | 103532611100 |
oct | 17675305413 |
9 | 5443007615 |
10 | 2130021131 |
11 | 9a3383447 |
12 | 4b540b14b |
13 | 27c39c644 |
14 | 162c62aa7 |
15 | c6ee758b |
hex | 7ef58b0b |
2130021131 has 12 divisors (see below), whose sum is σ = 2488708008. Its totient is φ = 1817680032.
The previous prime is 2130021107. The next prime is 2130021133. The reversal of 2130021131 is 1311200312.
It is a de Polignac number, because none of the positive numbers 2k-2130021131 is a prime.
It is a super-2 number, since 2×21300211312 = 9073980037013038322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2130021133) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84626 + ... + 106871.
It is an arithmetic number, because the mean of its divisors is an integer number (207392334).
Almost surely, 22130021131 is an apocalyptic number.
2130021131 is a deficient number, since it is larger than the sum of its proper divisors (358686877).
2130021131 is a wasteful number, since it uses less digits than its factorization.
2130021131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 191738 (or 191731 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 14.
The square root of 2130021131 is about 46152.1519649951. The cubic root of 2130021131 is about 1286.6526060088.
Adding to 2130021131 its reverse (1311200312), we get a palindrome (3441221443).
The spelling of 2130021131 in words is "two billion, one hundred thirty million, twenty-one thousand, one hundred thirty-one".
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