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131013213331 = 71113547239273
BaseRepresentation
bin111101000000011111…
…1101111110010010011
3110112011112110211000111
41322000333233302103
54121303340311311
6140104151502151
712315425640040
oct1720077576223
9415145424014
10131013213331
11506205a8320
1221484087957
13c47ba8a050
1464abc961c7
15361bca4d21
hex1e80fefc93

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".

Divisors: 1 7 11 13 77 91 143 547 1001 3829 6017 7111 42119 49777 78221 239273 547547 1674911 2632003 3110549 18424021 21773843 34216039 130882331 239512273 916176317 1439705641 1701470303 10077939487 11910292121 18716173333 131013213331