Base | Representation |
---|---|
bin | 101111100000101111… |
… | …0000011110000110111 |
3 | 100202100122200122101021 |
4 | 1133001132003300313 |
5 | 3132424203131411 |
6 | 114512203442011 |
7 | 10241254540351 |
oct | 1370136036067 |
9 | 322318618337 |
10 | 102030130231 |
11 | 3a2a8391a87 |
12 | 17935826307 |
13 | 98102a6133 |
14 | 4d1c9200d1 |
15 | 29c259ea71 |
hex | 17c1783c37 |
102030130231 has 4 divisors (see below), whose sum is σ = 102030926200. Its totient is φ = 102029334264.
The previous prime is 102030130217. The next prime is 102030130243. The reversal of 102030130231 is 132031030201.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 102030130231 - 211 = 102030128183 is a prime.
It is a super-2 number, since 2×1020301302312 (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 (102030130211) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157116 + ... + 478273.
It is an arithmetic number, because the mean of its divisors is an integer number (25507731550).
Almost surely, 2102030130231 is an apocalyptic number.
102030130231 is a deficient number, since it is larger than the sum of its proper divisors (795969).
102030130231 is an equidigital number, since it uses as much as digits as its factorization.
102030130231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 795968.
The product of its (nonzero) digits is 108, while the sum is 16.
Adding to 102030130231 its reverse (132031030201), we get a palindrome (234061160432).
The spelling of 102030130231 in words is "one hundred two billion, thirty million, one hundred thirty thousand, two hundred thirty-one".
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