Base | Representation |
---|---|
bin | 10010111001111110… |
… | …110110011110110111 |
3 | 1221101202021110112020 |
4 | 102321332312132313 |
5 | 313033313131411 |
6 | 13154210124223 |
7 | 1316025155103 |
oct | 227176663667 |
9 | 57352243466 |
10 | 20300130231 |
11 | 8677992337 |
12 | 3b26580673 |
13 | 1bb691caa4 |
14 | da80d0903 |
15 | 7dc2a3606 |
hex | 4b9fb67b7 |
20300130231 has 4 divisors (see below), whose sum is σ = 27066840312. Its totient is φ = 13533420152.
The previous prime is 20300130209. The next prime is 20300130259. The reversal of 20300130231 is 13203100302.
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 20300130231 - 25 = 20300130199 is a prime.
It is a super-2 number, since 2×203001302312 (a number of 21 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 20300130231.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20300130131) 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, 3383355036 + ... + 3383355041.
It is an arithmetic number, because the mean of its divisors is an integer number (6766710078).
Almost surely, 220300130231 is an apocalyptic number.
20300130231 is a deficient number, since it is larger than the sum of its proper divisors (6766710081).
20300130231 is an equidigital number, since it uses as much as digits as its factorization.
20300130231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6766710080.
The product of its (nonzero) digits is 108, while the sum is 15.
Adding to 20300130231 its reverse (13203100302), we get a palindrome (33503230533).
The spelling of 20300130231 in words is "twenty billion, three hundred million, one hundred thirty thousand, two hundred thirty-one".
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