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131270361 = 3231902469
BaseRepresentation
bin1111101001100…
…00011011011001
3100011000020002020
413310300123121
5232101122421
621005325053
73152531265
oct764603331
9304006066
10131270361
116810a402
1237b66789
1321271a91
14136110a5
15b7cedc6
hex7d306d9

131270361 has 8 divisors (see below), whose sum is σ = 182637120. Its totient is φ = 83708592.

The previous prime is 131270333. The next prime is 131270383. The reversal of 131270361 is 163072131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131270361 - 25 = 131270329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131270261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951166 + ... + 951303.

It is an arithmetic number, because the mean of its divisors is an integer number (22829640).

Almost surely, 2131270361 is an apocalyptic number.

It is an amenable number.

131270361 is a deficient number, since it is larger than the sum of its proper divisors (51366759).

131270361 is a wasteful number, since it uses less digits than its factorization.

131270361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902495.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 131270361 is about 11457.3278298214. The cubic root of 131270361 is about 508.2244562184.

The spelling of 131270361 in words is "one hundred thirty-one million, two hundred seventy thousand, three hundred sixty-one".

Divisors: 1 3 23 69 1902469 5707407 43756787 131270361