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131274617 = 200365539
BaseRepresentation
bin1111101001100…
…01011101111001
3100011000102220212
413310301131321
5232101241432
621005400505
73152546555
oct764613571
9304012825
10131274617
1168112621
1237b69135
13212739b6
1413612865
15b7d12b2
hex7d31779

131274617 has 4 divisors (see below), whose sum is σ = 131342160. Its totient is φ = 131207076.

The previous prime is 131274607. The next prime is 131274653. The reversal of 131274617 is 716472131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 716472131 = 1831391301.

It is a cyclic number.

It is not a de Polignac number, because 131274617 - 212 = 131270521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131274607) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 30767 + ... + 34772.

It is an arithmetic number, because the mean of its divisors is an integer number (32835540).

Almost surely, 2131274617 is an apocalyptic number.

It is an amenable number.

131274617 is a deficient number, since it is larger than the sum of its proper divisors (67543).

131274617 is an equidigital number, since it uses as much as digits as its factorization.

131274617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67542.

The product of its digits is 7056, while the sum is 32.

The square root of 131274617 is about 11457.5135609782. The cubic root of 131274617 is about 508.2299486487.

The spelling of 131274617 in words is "one hundred thirty-one million, two hundred seventy-four thousand, six hundred seventeen".

Divisors: 1 2003 65539 131274617