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131301693 = 32171316551
BaseRepresentation
bin1111101001110…
…00000100111101
3100011001211001200
413310320010331
5232103123233
621010130113
73153021525
oct764700475
9304054050
10131301693
11681309a6
1237b80939
1321283113
141361c685
15b7d9313
hex7d3813d

131301693 has 24 divisors (see below), whose sum is σ = 202378176. Its totient is φ = 81744000.

The previous prime is 131301689. The next prime is 131301697. The reversal of 131301693 is 396103131.

It is an interprime number because it is at equal distance from previous prime (131301689) and next prime (131301697).

It is not a de Polignac number, because 131301693 - 22 = 131301689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131301697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16768 + ... + 23318.

It is an arithmetic number, because the mean of its divisors is an integer number (8432424).

Almost surely, 2131301693 is an apocalyptic number.

It is an amenable number.

131301693 is a deficient number, since it is larger than the sum of its proper divisors (71076483).

131301693 is a wasteful number, since it uses less digits than its factorization.

131301693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6705 (or 6702 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 131301693 is about 11458.6950827745. The cubic root of 131301693 is about 508.2648878432.

The spelling of 131301693 in words is "one hundred thirty-one million, three hundred one thousand, six hundred ninety-three".

Divisors: 1 3 9 17 51 131 153 393 1179 2227 6551 6681 19653 20043 58959 111367 334101 858181 1002303 2574543 7723629 14589077 43767231 131301693