Base | Representation |
---|---|
bin | 111100100010000… |
… | …0100011110001111 |
3 | 12020112220002011110 |
4 | 1321010010132033 |
5 | 13124431010111 |
6 | 533313423103 |
7 | 101222102406 |
oct | 17104043617 |
9 | 5215802143 |
10 | 2031110031 |
11 | 952566035 |
12 | 48826aa93 |
13 | 264a4a672 |
14 | 153a7663d |
15 | bd4aa5a6 |
hex | 7910478f |
2031110031 has 8 divisors (see below), whose sum is σ = 2771127040. Its totient is φ = 1322583192.
The previous prime is 2031110009. The next prime is 2031110057. The reversal of 2031110031 is 1300111302.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2031110031 - 25 = 2031109999 is a prime.
It is a super-2 number, since 2×20311100312 = 8250815916057641922, 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 = 2031109989 and 2031110016.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2031110531) 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, 7872391 + ... + 7872648.
It is an arithmetic number, because the mean of its divisors is an integer number (346390880).
Almost surely, 22031110031 is an apocalyptic number.
2031110031 is a deficient number, since it is larger than the sum of its proper divisors (740017009).
2031110031 is a wasteful number, since it uses less digits than its factorization.
2031110031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15745085.
The product of its (nonzero) digits is 18, while the sum is 12.
The square root of 2031110031 is about 45067.8380999133. The cubic root of 2031110031 is about 1266.4201646899.
Adding to 2031110031 its reverse (1300111302), we get a palindrome (3331221333).
The spelling of 2031110031 in words is "two billion, thirty-one million, one hundred ten thousand, thirty-one".
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