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131134938 = 23111986893
BaseRepresentation
bin1111101000011…
…11010111011010
3100010202100022120
413310033113122
5232032304223
621002402110
73151425414
oct764172732
9303670276
10131134938
1168027690
1237b00336
132122524c
14135b79b4
15b7a4be3
hex7d0f5da

131134938 has 16 divisors (see below), whose sum is σ = 286112736. Its totient is φ = 39737840.

The previous prime is 131134931. The next prime is 131134951. The reversal of 131134938 is 839431131.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 131134899 and 131134908.

It is not an unprimeable number, because it can be changed into a prime (131134931) 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 7 ways as a sum of consecutive naturals, for example, 993381 + ... + 993512.

It is an arithmetic number, because the mean of its divisors is an integer number (17882046).

Almost surely, 2131134938 is an apocalyptic number.

131134938 is an abundant number, since it is smaller than the sum of its proper divisors (154977798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131134938 is a wasteful number, since it uses less digits than its factorization.

131134938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986909.

The product of its digits is 7776, while the sum is 33.

The square root of 131134938 is about 11451.4164189414. The cubic root of 131134938 is about 508.0496288340.

The spelling of 131134938 in words is "one hundred thirty-one million, one hundred thirty-four thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 11 22 33 66 1986893 3973786 5960679 11921358 21855823 43711646 65567469 131134938