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131529079830 = 23543101960527
BaseRepresentation
bin111101001111110111…
…1100111110000010110
3110120111111011112211010
41322133233213300112
54123332421023310
6140231300353050
712334261506021
oct1723757476026
9416444145733
10131529079830
1150865811475
12215a89a5786
13c531908cb5
14651a5bc1b8
15364c204320
hex1e9fbe7c16

131529079830 has 32 divisors (see below), whose sum is σ = 323010952704. Its totient is φ = 34258736736.

The previous prime is 131529079823. The next prime is 131529079837. The reversal of 131529079830 is 38970925131.

It is an interprime number because it is at equal distance from previous prime (131529079823) and next prime (131529079837).

It is a super-3 number, since 3×1315290798303 (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 131529079830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131529079837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50978974 + ... + 50981553.

It is an arithmetic number, because the mean of its divisors is an integer number (10094092272).

Almost surely, 2131529079830 is an apocalyptic number.

131529079830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131529079830 is an abundant number, since it is smaller than the sum of its proper divisors (191481872874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131529079830 is a wasteful number, since it uses less digits than its factorization.

131529079830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101960580.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 131529079830 in words is "one hundred thirty-one billion, five hundred twenty-nine million, seventy-nine thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 43 86 129 215 258 430 645 1290 101960527 203921054 305881581 509802635 611763162 1019605270 1529407905 3058815810 4384302661 8768605322 13152907983 21921513305 26305815966 43843026610 65764539915 131529079830