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131533879841 = 713291571671901
BaseRepresentation
bin111101010000000000…
…1111011101000100001
3110120111211012102012022
41322200001323220201
54123340133123331
6140231551311225
712334350350150
oct1724001735041
9416454172168
10131533879841
115086849a821
12215aa51b515
13c5328c9a40
14651b0ab597
15364c85167b
hex1ea007ba21

131533879841 has 64 divisors (see below), whose sum is σ = 169635271680. Its totient is φ = 99192038400.

The previous prime is 131533879823. The next prime is 131533879861. The reversal of 131533879841 is 148978335131.

It is a happy number.

It is not a de Polignac number, because 131533879841 - 214 = 131533863457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131533879861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69190991 + ... + 69192891.

It is an arithmetic number, because the mean of its divisors is an integer number (2650551120).

Almost surely, 2131533879841 is an apocalyptic number.

It is an amenable number.

131533879841 is a deficient number, since it is larger than the sum of its proper divisors (38101391839).

131533879841 is a wasteful number, since it uses less digits than its factorization.

131533879841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274.

The product of its digits is 2177280, while the sum is 53.

The spelling of 131533879841 in words is "one hundred thirty-one billion, five hundred thirty-three million, eight hundred seventy-nine thousand, eight hundred forty-one".

Divisors: 1 7 13 29 91 157 167 203 377 1099 1169 1901 2041 2171 2639 4553 4843 13307 14287 15197 24713 26219 31871 33901 55129 59189 62959 172991 183533 298457 317467 340847 385903 414323 440713 716677 760351 2089199 2222269 2385929 3879941 4127071 5016739 5322457 8655253 9206543 9884563 27159587 28889497 49842319 60586771 64445801 69191941 112518289 119685059 348896233 647950147 787628023 837795413 1445427251 4535651029 10117990757 18790554263 131533879841