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131704305 = 358780287
BaseRepresentation
bin1111101100110…
…10010111110001
3100011211021100020
413312122113301
5232204014210
621022514053
73156316365
oct766322761
9304737306
10131704305
1168386437
1238135929
1321394455
14136c52a5
15b868770
hex7d9a5f1

131704305 has 8 divisors (see below), whose sum is σ = 210726912. Its totient is φ = 70242288.

The previous prime is 131704291. The next prime is 131704319. The reversal of 131704305 is 503407131.

It is an interprime number because it is at equal distance from previous prime (131704291) and next prime (131704319).

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

It is not a de Polignac number, because 131704305 - 25 = 131704273 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4390129 + ... + 4390158.

It is an arithmetic number, because the mean of its divisors is an integer number (26340864).

Almost surely, 2131704305 is an apocalyptic number.

131704305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131704305 is a deficient number, since it is larger than the sum of its proper divisors (79022607).

131704305 is an equidigital number, since it uses as much as digits as its factorization.

131704305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780295.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 131704305 is about 11476.2496051628. The cubic root of 131704305 is about 508.7838573937.

The spelling of 131704305 in words is "one hundred thirty-one million, seven hundred four thousand, three hundred five".

Divisors: 1 3 5 15 8780287 26340861 43901435 131704305