Base | Representation |
---|---|
bin | 1101011101101010001… |
… | …1111110010011101111 |
3 | 211010000201000000222122 |
4 | 3113122203332103233 |
5 | 12242200313130111 |
6 | 254131404303155 |
7 | 22465555444265 |
oct | 3273243762357 |
9 | 733021000878 |
10 | 231300130031 |
11 | 8a103991163 |
12 | 389b1b41abb |
13 | 18a71b66489 |
14 | b2a3082435 |
15 | 603b2b6cdb |
hex | 35da8fe4ef |
231300130031 has 4 divisors (see below), whose sum is σ = 233684667552. Its totient is φ = 228915592512.
The previous prime is 231300130003. The next prime is 231300130063. The reversal of 231300130031 is 130031003132.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 231300130031 - 210 = 231300129007 is a prime.
It is a super-2 number, since 2×2313001300312 (a number of 24 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 231300129991 and 231300130009.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (231300130331) 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, 1192268615 + ... + 1192268808.
It is an arithmetic number, because the mean of its divisors is an integer number (58421166888).
Almost surely, 2231300130031 is an apocalyptic number.
231300130031 is a deficient number, since it is larger than the sum of its proper divisors (2384537521).
231300130031 is an equidigital number, since it uses as much as digits as its factorization.
231300130031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2384537520.
The product of its (nonzero) digits is 162, while the sum is 17.
Adding to 231300130031 its reverse (130031003132), we get a palindrome (361331133163).
The spelling of 231300130031 in words is "two hundred thirty-one billion, three hundred million, one hundred thirty thousand, thirty-one".
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