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131441311 = 2917925321
BaseRepresentation
bin1111101010110…
…10001010011111
3100011022220120201
413311122022133
5232122110221
621013124331
73154142551
oct765321237
9304286521
10131441311
1168216891
12380296a7
1321301831
14136574d1
15b815891
hex7d5a29f

131441311 has 8 divisors (see below), whose sum is σ = 136738800. Its totient is φ = 126194880.

The previous prime is 131441309. The next prime is 131441371. The reversal of 131441311 is 113144131.

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

It is a cyclic number.

It is not a de Polignac number, because 131441311 - 21 = 131441309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131441371) 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, 7470 + ... + 17851.

It is an arithmetic number, because the mean of its divisors is an integer number (17092350).

Almost surely, 2131441311 is an apocalyptic number.

131441311 is a deficient number, since it is larger than the sum of its proper divisors (5297489).

131441311 is a wasteful number, since it uses less digits than its factorization.

131441311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25529.

The product of its digits is 144, while the sum is 19.

The square root of 131441311 is about 11464.7856935924. The cubic root of 131441311 is about 508.4449763803. Note that the first 3 decimals are identical.

Adding to 131441311 its reverse (113144131), we get a palindrome (244585442).

The spelling of 131441311 in words is "one hundred thirty-one million, four hundred forty-one thousand, three hundred eleven".

Divisors: 1 29 179 5191 25321 734309 4532459 131441311