Search a number
-
+
131394368880 = 24325182492179
BaseRepresentation
bin111101001011110110…
…1101111010101110000
3110120011002200112010200
41322113231233111300
54123043424301010
6140210045155200
712331034464515
oct1722755572560
9416132615120
10131394368880
11507a6772105
122156b85bb00
13c50ca31188
14650675330c
153640494cc0
hex1e97b6f570

131394368880 has 60 divisors (see below), whose sum is σ = 441266091240. Its totient is φ = 35038498176.

The previous prime is 131394368851. The next prime is 131394368921. The reversal of 131394368880 is 88863493131.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-3 number, since 3×1313943688803 (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91245370 + ... + 91246809.

It is an arithmetic number, because the mean of its divisors is an integer number (7354434854).

Almost surely, 2131394368880 is an apocalyptic number.

131394368880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131394368880 is an abundant number, since it is smaller than the sum of its proper divisors (309871722360).

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

131394368880 is a wasteful number, since it uses less digits than its factorization.

131394368880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182492198 (or 182492189 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 131394368880 in words is "one hundred thirty-one billion, three hundred ninety-four million, three hundred sixty-eight thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 144 180 240 360 720 182492179 364984358 547476537 729968716 912460895 1094953074 1459937432 1642429611 1824921790 2189906148 2737382685 2919874864 3284859222 3649843580 4379812296 5474765370 6569718444 7299687160 8212148055 8759624592 10949530740 13139436888 14599374320 16424296110 21899061480 26278873776 32848592220 43798122960 65697184440 131394368880