Base | Representation |
---|---|
bin | 1100010101110011111… |
… | …0100110000010110011 |
3 | 202021020120110001220200 |
4 | 3011130332212002303 |
5 | 11433200401411011 |
6 | 241221513010243 |
7 | 21213613254540 |
oct | 3053476460263 |
9 | 667216401820 |
10 | 212013310131 |
11 | 81a06a93987 |
12 | 3510a9b3983 |
13 | 16cba1640cc |
14 | a3937a5bc7 |
15 | 57ace73856 |
hex | 315cfa60b3 |
212013310131 has 48 divisors (see below), whose sum is σ = 359677843200. Its totient is φ = 117801221184.
The previous prime is 212013310123. The next prime is 212013310177. The reversal of 212013310131 is 131013310212.
212013310131 is a `hidden beast` number, since 2 + 1 + 201 + 331 + 0 + 131 = 666.
It is not a de Polignac number, because 212013310131 - 23 = 212013310123 is a prime.
It is a super-2 number, since 2×2120133101312 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (212013310631) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3745800 + ... + 3801978.
It is an arithmetic number, because the mean of its divisors is an integer number (7493288400).
Almost surely, 2212013310131 is an apocalyptic number.
212013310131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
212013310131 is a deficient number, since it is larger than the sum of its proper divisors (147664533069).
212013310131 is a wasteful number, since it uses less digits than its factorization.
212013310131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 57848 (or 57845 counting only the distinct ones).
The product of its (nonzero) digits is 108, while the sum is 18.
Adding to 212013310131 its reverse (131013310212), we get a palindrome (343026620343).
The spelling of 212013310131 in words is "two hundred twelve billion, thirteen million, three hundred ten thousand, one hundred thirty-one".
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