Base | Representation |
---|---|
bin | 1100010101110011111… |
… | …0001110001001000111 |
3 | 202021020120021002121202 |
4 | 3011130332032021013 |
5 | 11433200340242411 |
6 | 241221510533115 |
7 | 21213612366242 |
oct | 3053476161107 |
9 | 667216232552 |
10 | 212013212231 |
11 | 81a06a27377 |
12 | 3510a96719b |
13 | 16cba12b692 |
14 | a39377c259 |
15 | 57ace5483b |
hex | 315cf8e247 |
212013212231 has 8 divisors (see below), whose sum is σ = 213297434784. Its totient is φ = 210729164800.
The previous prime is 212013212219. The next prime is 212013212239. The reversal of 212013212231 is 132212310212.
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 212013212231 - 214 = 212013195847 is a prime.
It is a super-2 number, since 2×2120132122312 (a number of 23 digits) 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 (212013212239) 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, 3038471 + ... + 3107463.
It is an arithmetic number, because the mean of its divisors is an integer number (26662179348).
Almost surely, 2212013212231 is an apocalyptic number.
212013212231 is a deficient number, since it is larger than the sum of its proper divisors (1284222553).
212013212231 is a wasteful number, since it uses less digits than its factorization.
212013212231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 87561.
The product of its (nonzero) digits is 288, while the sum is 20.
Adding to 212013212231 its reverse (132212310212), we get a palindrome (344225522443).
The spelling of 212013212231 in words is "two hundred twelve billion, thirteen million, two hundred twelve thousand, two hundred thirty-one".
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