Base | Representation |
---|---|
bin | 11000100110111010… |
… | …00111000010111111 |
3 | 1021002201101120121120 |
4 | 30103131013002333 |
5 | 204024043100111 |
6 | 10022540002023 |
7 | 645250124466 |
oct | 142335070277 |
9 | 37081346546 |
10 | 13211300031 |
11 | 566a486286 |
12 | 2688530313 |
13 | 13270b44c7 |
14 | 8d484d9dd |
15 | 524c8e406 |
hex | 3137470bf |
13211300031 has 16 divisors (see below), whose sum is σ = 18134390400. Its totient is φ = 8549009568.
The previous prime is 13211300023. The next prime is 13211300033. The reversal of 13211300031 is 13000311231.
It is not a de Polignac number, because 13211300031 - 23 = 13211300023 is a prime.
It is a super-2 number, since 2×132113000312 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13211300033) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95521 + ... + 188538.
It is an arithmetic number, because the mean of its divisors is an integer number (1133399400).
Almost surely, 213211300031 is an apocalyptic number.
13211300031 is a deficient number, since it is larger than the sum of its proper divisors (4923090369).
13211300031 is a wasteful number, since it uses less digits than its factorization.
13211300031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 284518.
The product of its (nonzero) digits is 54, while the sum is 15.
Adding to 13211300031 its reverse (13000311231), we get a palindrome (26211611262).
The spelling of 13211300031 in words is "thirteen billion, two hundred eleven million, three hundred thousand, thirty-one".
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