Base | Representation |
---|---|
bin | 111101000000011111… |
… | …1101111110010010011 |
3 | 110112011112110211000111 |
4 | 1322000333233302103 |
5 | 4121303340311311 |
6 | 140104151502151 |
7 | 12315425640040 |
oct | 1720077576223 |
9 | 415145424014 |
10 | 131013213331 |
11 | 506205a8320 |
12 | 21484087957 |
13 | c47ba8a050 |
14 | 64abc961c7 |
15 | 361bca4d21 |
hex | 1e80fefc93 |
131013213331 has 32 divisors (see below), whose sum is σ = 176228172288. Its totient is φ = 94062608640.
The previous prime is 131013213323. The next prime is 131013213343. The reversal of 131013213331 is 133312310131.
It is not a de Polignac number, because 131013213331 - 23 = 131013213323 is a prime.
It is a super-2 number, since 2×1310132133312 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (131013213391) 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, 427911 + ... + 667183.
It is an arithmetic number, because the mean of its divisors is an integer number (5507130384).
Almost surely, 2131013213331 is an apocalyptic number.
131013213331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
131013213331 is a deficient number, since it is larger than the sum of its proper divisors (45214958957).
131013213331 is a wasteful number, since it uses less digits than its factorization.
131013213331 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 239851.
The product of its (nonzero) digits is 486, while the sum is 22.
Adding to 131013213331 its reverse (133312310131), we get a palindrome (264325523462).
The spelling of 131013213331 in words is "one hundred thirty-one billion, thirteen million, two hundred thirteen thousand, three hundred thirty-one".
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