Base | Representation |
---|---|
bin | 111100001111000… |
… | …0010101000100111 |
3 | 12012212010121021020 |
4 | 1320132002220213 |
5 | 13114403003111 |
6 | 532320022223 |
7 | 101041262310 |
oct | 17036025047 |
9 | 5185117236 |
10 | 2021141031 |
11 | 947977198 |
12 | 484a61973 |
13 | 262969c50 |
14 | 1525dd607 |
15 | bc68b906 |
hex | 78782a27 |
2021141031 has 32 divisors (see below), whose sum is σ = 3460961280. Its totient is φ = 1019741184.
The previous prime is 2021141009. The next prime is 2021141039. The reversal of 2021141031 is 1301411202.
It is not a de Polignac number, because 2021141031 - 29 = 2021140519 is a prime.
It is a super-2 number, since 2×20211410312 = 8170022134383485922, 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 2021141031.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2021141039) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154666 + ... + 167223.
It is an arithmetic number, because the mean of its divisors is an integer number (108155040).
Almost surely, 22021141031 is an apocalyptic number.
2021141031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
2021141031 is a deficient number, since it is larger than the sum of its proper divisors (1439820249).
2021141031 is a wasteful number, since it uses less digits than its factorization.
2021141031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 321935.
The product of its (nonzero) digits is 48, while the sum is 15.
The square root of 2021141031 is about 44957.1021196874. The cubic root of 2021141031 is about 1264.3448374078.
Adding to 2021141031 its reverse (1301411202), we get a palindrome (3322552233).
The spelling of 2021141031 in words is "two billion, twenty-one million, one hundred forty-one thousand, thirty-one".
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