Base | Representation |
---|---|
bin | 1011110101111011000010… |
… | …1111110111011011111111 |
3 | 1201002210111122210200122200 |
4 | 2331132300233313123333 |
5 | 3201314012332241111 |
6 | 43405434151442543 |
7 | 2512510540064334 |
oct | 275366057673377 |
9 | 51083448720580 |
10 | 13021011212031 |
11 | 41701a8410339 |
12 | 1563686386453 |
13 | 735b509c7664 |
14 | 33031273698b |
15 | 178a8e09b256 |
hex | bd7b0bf76ff |
13021011212031 has 48 divisors (see below), whose sum is σ = 19223997112320. Its totient is φ = 8490934071360.
The previous prime is 13021011211993. The next prime is 13021011212057. The reversal of 13021011212031 is 13021211012031.
13021011212031 is a `hidden beast` number, since 130 + 210 + 1 + 121 + 203 + 1 = 666.
It is not a de Polignac number, because 13021011212031 - 215 = 13021011179263 is a prime.
It is a super-2 number, since 2×130210112120312 (a number of 27 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 13021011211995 and 13021011212013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13021011212071) 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, 107988066 + ... + 108108576.
It is an arithmetic number, because the mean of its divisors is an integer number (400499939840).
Almost surely, 213021011212031 is an apocalyptic number.
13021011212031 is a deficient number, since it is larger than the sum of its proper divisors (6202985900289).
13021011212031 is a wasteful number, since it uses less digits than its factorization.
13021011212031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 122036 (or 122033 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 18.
Adding to 13021011212031 its reverse (13021211012031), we get a palindrome (26042222224062).
The spelling of 13021011212031 in words is "thirteen trillion, twenty-one billion, eleven million, two hundred twelve thousand, thirty-one".
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