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131275270 = 2571875361
BaseRepresentation
bin1111101001100…
…01101000000110
3100011000110211001
413310301220012
5232101302040
621005403514
73152551510
oct764615006
9304013731
10131275270
1168113065
1237b6959a
1321274099
1413612bb0
15b7d159a
hex7d31a06

131275270 has 16 divisors (see below), whose sum is σ = 270052128. Its totient is φ = 45008640.

The previous prime is 131275253. The next prime is 131275279. The reversal of 131275270 is 72572131.

It is a super-3 number, since 3×1312752703 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131275279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937611 + ... + 937750.

It is an arithmetic number, because the mean of its divisors is an integer number (16878258).

Almost surely, 2131275270 is an apocalyptic number.

131275270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131275270 is an abundant number, since it is smaller than the sum of its proper divisors (138776858).

131275270 is a wasteful number, since it uses less digits than its factorization.

131275270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875375.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 131275270 is about 11457.5420575270. The cubic root of 131275270 is about 508.2307913443.

The spelling of 131275270 in words is "one hundred thirty-one million, two hundred seventy-five thousand, two hundred seventy".

Divisors: 1 2 5 7 10 14 35 70 1875361 3750722 9376805 13127527 18753610 26255054 65637635 131275270