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131444043 = 3107409483
BaseRepresentation
bin1111101010110…
…10110101001011
3100011100001022220
413311122311023
5232122202133
621013145123
73154153533
oct765326513
9304301286
10131444043
1168218945
123802b1a3
1321302b53
14136584c3
15b8165b3
hex7d5ad4b

131444043 has 8 divisors (see below), whose sum is σ = 176897088. Its totient is φ = 86810184.

The previous prime is 131444041. The next prime is 131444069. The reversal of 131444043 is 340444131.

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

It is not a de Polignac number, because 131444043 - 21 = 131444041 is a prime.

It is a super-3 number, since 3×1314440433 (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131444041) 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, 204421 + ... + 205062.

It is an arithmetic number, because the mean of its divisors is an integer number (22112136).

Almost surely, 2131444043 is an apocalyptic number.

131444043 is a deficient number, since it is larger than the sum of its proper divisors (45453045).

131444043 is a wasteful number, since it uses less digits than its factorization.

131444043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409593.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 131444043 is about 11464.9048404250. The cubic root of 131444043 is about 508.4484990223.

Adding to 131444043 its reverse (340444131), we get a palindrome (471888174).

The spelling of 131444043 in words is "one hundred thirty-one million, four hundred forty-four thousand, forty-three".

Divisors: 1 3 107 321 409483 1228449 43814681 131444043