Base | Representation |
---|---|
bin | 111101000000011010… |
… | …0101011011101011111 |
3 | 110112011100000102011221 |
4 | 1322000310223131133 |
5 | 4121302114441111 |
6 | 140104005354211 |
7 | 12315362164324 |
oct | 1720064533537 |
9 | 415140012157 |
10 | 131010312031 |
11 | 506199a6555 |
12 | 21483108967 |
13 | c47b2b25c1 |
14 | 64ab73cb4b |
15 | 361b8d0371 |
hex | 1e80d2b75f |
131010312031 has 12 divisors (see below), whose sum is σ = 140521322032. Its totient is φ = 122106670848.
The previous prime is 131010311977. The next prime is 131010312047. The reversal of 131010312031 is 130213010131.
It is not a de Polignac number, because 131010312031 - 227 = 130876094303 is a prime.
It is a super-2 number, since 2×1310103120312 (a number of 23 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 = 131010311996 and 131010312014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131010312061) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2170830 + ... + 2230363.
Almost surely, 2131010312031 is an apocalyptic number.
131010312031 is a deficient number, since it is larger than the sum of its proper divisors (9511010001).
131010312031 is a wasteful number, since it uses less digits than its factorization.
131010312031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4401330 (or 4401313 counting only the distinct ones).
The product of its (nonzero) digits is 54, while the sum is 16.
Adding to 131010312031 its reverse (130213010131), we get a palindrome (261223322162).
The spelling of 131010312031 in words is "one hundred thirty-one billion, ten million, three hundred twelve thousand, thirty-one".
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