Base | Representation |
---|---|
bin | 110100100001110100000110… |
… | …001111001000000011101001 |
3 | 1010021222111102101202121221010 |
4 | 310201310012033020003221 |
5 | 220240031230212404001 |
6 | 2135202030545534133 |
7 | 66442540005021420 |
oct | 6441640617100351 |
9 | 1107874371677833 |
10 | 231022100513001 |
11 | 67679a17007876 |
12 | 21ab176a044349 |
13 | 9bba3a15aba95 |
14 | 410975a6802b7 |
15 | 1ba96359648d6 |
hex | d21d063c80e9 |
231022100513001 has 32 divisors (see below), whose sum is σ = 354555584667648. Its totient is φ = 131069012754240.
The previous prime is 231022100512991. The next prime is 231022100513033. The reversal of 231022100513001 is 100315001220132.
It is a de Polignac number, because none of the positive numbers 2k-231022100513001 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (231022100513201) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41093265 + ... + 46375646.
It is an arithmetic number, because the mean of its divisors is an integer number (11079862020864).
Almost surely, 2231022100513001 is an apocalyptic number.
231022100513001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
It is an amenable number.
231022100513001 is a deficient number, since it is larger than the sum of its proper divisors (123533484154647).
231022100513001 is a wasteful number, since it uses less digits than its factorization.
231022100513001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 87469821.
The product of its (nonzero) digits is 360, while the sum is 21.
Adding to 231022100513001 its reverse (100315001220132), we get a palindrome (331337101733133).
The spelling of 231022100513001 in words is "two hundred thirty-one trillion, twenty-two billion, one hundred million, five hundred thirteen thousand, one".
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