Base | Representation |
---|---|
bin | 11001000011001… |
… | …11110001000111 |
3 | 112122102020012112 |
4 | 30201213301013 |
5 | 412243441411 |
6 | 32504011235 |
7 | 5131106510 |
oct | 1441476107 |
9 | 478366175 |
10 | 210140231 |
11 | a8689514 |
12 | 5a460b1b |
13 | 346c7942 |
14 | 1dca1a07 |
15 | 136adb8b |
hex | c867c47 |
210140231 has 8 divisors (see below), whose sum is σ = 240261504. Its totient is φ = 180044280.
The previous prime is 210140221. The next prime is 210140311. The reversal of 210140231 is 132041012.
210140231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
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 210140231 - 214 = 210123847 is a prime.
It is a super-2 number, since 2×2101402312 = 88317833369466722, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (210140201) 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, 17396 + ... + 26886.
It is an arithmetic number, because the mean of its divisors is an integer number (30032688).
Almost surely, 2210140231 is an apocalyptic number.
210140231 is a deficient number, since it is larger than the sum of its proper divisors (30121273).
210140231 is an equidigital number, since it uses as much as digits as its factorization.
210140231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12661.
The product of its (nonzero) digits is 48, while the sum is 14.
The square root of 210140231 is about 14496.2143678962. The cubic root of 210140231 is about 594.5244709359.
Adding to 210140231 its reverse (132041012), we get a palindrome (342181243).
The spelling of 210140231 in words is "two hundred ten million, one hundred forty thousand, two hundred thirty-one".
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