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131460689 = 711851559
BaseRepresentation
bin1111101010111…
…10111001010001
3100011100220011102
413311132321101
5232123220224
621013354145
73154253213
oct765367121
9304326142
10131460689
116822a3a8
1238038955
132130a5b9
14136605b3
15b81b4ae
hex7d5ee51

131460689 has 4 divisors (see below), whose sum is σ = 133312320. Its totient is φ = 129609060.

The previous prime is 131460671. The next prime is 131460701. The reversal of 131460689 is 986064131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131460689 - 212 = 131456593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131450689) 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, 925709 + ... + 925850.

It is an arithmetic number, because the mean of its divisors is an integer number (33328080).

Almost surely, 2131460689 is an apocalyptic number.

It is an amenable number.

131460689 is a deficient number, since it is larger than the sum of its proper divisors (1851631).

131460689 is an equidigital number, since it uses as much as digits as its factorization.

131460689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851630.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 131460689 is about 11465.6307720073. The cubic root of 131460689 is about 508.4699613274.

The spelling of 131460689 in words is "one hundred thirty-one million, four hundred sixty thousand, six hundred eighty-nine".

Divisors: 1 71 1851559 131460689