Base | Representation |
---|---|
bin | 111101000000011110… |
… | …0010011010000001110 |
3 | 110112011110202220220220 |
4 | 1322000330103100032 |
5 | 4121303122410110 |
6 | 140104120252210 |
7 | 12315415155360 |
oct | 1720074232016 |
9 | 415143686826 |
10 | 131012310030 |
11 | 50620040698 |
12 | 21483911066 |
13 | c47b831b54 |
14 | 64abadcd30 |
15 | 361bb77370 |
hex | 1e80f1340e |
131012310030 has 64 divisors (see below), whose sum is σ = 359578275840. Its totient is φ = 29926485504.
The previous prime is 131012310029. The next prime is 131012310031. The reversal of 131012310030 is 30013210131.
It is an interprime number because it is at equal distance from previous prime (131012310029) and next prime (131012310031).
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a junction number, because it is equal to n+sod(n) for n = 131012309991 and 131012310009.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131012310031) 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, 130006 + ... + 528134.
It is an arithmetic number, because the mean of its divisors is an integer number (5618410560).
Almost surely, 2131012310030 is an apocalyptic number.
131012310030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131012310030 is an abundant number, since it is smaller than the sum of its proper divisors (228565965810).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131012310030 is a wasteful number, since it uses less digits than its factorization.
131012310030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 399713.
The product of its (nonzero) digits is 54, while the sum is 15.
Adding to 131012310030 its reverse (30013210131), we get a palindrome (161025520161).
The spelling of 131012310030 in words is "one hundred thirty-one billion, twelve million, three hundred ten thousand, thirty".
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