Base | Representation |
---|---|
bin | 100110001011… |
… | …0010010010111 |
3 | 1101122211100211 |
4 | 1030112102113 |
5 | 20110423411 |
6 | 1552550251 |
7 | 332055346 |
oct | 114262227 |
9 | 41584324 |
10 | 20014231 |
11 | 1032aa96 |
12 | 6852387 |
13 | 41b9a53 |
14 | 292db5d |
15 | 1b55221 |
hex | 1316497 |
20014231 has 8 divisors (see below), whose sum is σ = 20625840. Its totient is φ = 19411392.
The previous prime is 20014229. The next prime is 20014237. The reversal of 20014231 is 13241002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20014231 - 21 = 20014229 is a prime.
It is a super-2 number, since 2×200142312 = 801138885042722, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20014237) 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, 2596 + ... + 6838.
It is an arithmetic number, because the mean of its divisors is an integer number (2578230).
Almost surely, 220014231 is an apocalyptic number.
20014231 is a deficient number, since it is larger than the sum of its proper divisors (611609).
20014231 is an equidigital number, since it uses as much as digits as its factorization.
20014231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4385.
The product of its (nonzero) digits is 48, while the sum is 13.
The square root of 20014231 is about 4473.7267462374. The cubic root of 20014231 is about 271.5061278572.
Adding to 20014231 its reverse (13241002), we get a palindrome (33255233).
The spelling of 20014231 in words is "twenty million, fourteen thousand, two hundred thirty-one".
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