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131311041 = 343770347
BaseRepresentation
bin1111101001110…
…10010111000001
3100011002021212220
413310322113001
5232103423131
621010241253
73153061011
oct764722701
9304067786
10131311041
1168137a24
1237b86229
1321287454
1413621c41
15b7dbe96
hex7d3a5c1

131311041 has 4 divisors (see below), whose sum is σ = 175081392. Its totient is φ = 87540692.

The previous prime is 131311031. The next prime is 131311057. The reversal of 131311041 is 140113131.

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 131311041 - 211 = 131308993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131311041.

It is not an unprimeable number, because it can be changed into a prime (131311001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21885171 + ... + 21885176.

It is an arithmetic number, because the mean of its divisors is an integer number (43770348).

Almost surely, 2131311041 is an apocalyptic number.

It is an amenable number.

131311041 is a deficient number, since it is larger than the sum of its proper divisors (43770351).

131311041 is an equidigital number, since it uses as much as digits as its factorization.

131311041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43770350.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 131311041 is about 11459.1029753642. The cubic root of 131311041 is about 508.2769494988.

Adding to 131311041 its reverse (140113131), we get a palindrome (271424172).

The spelling of 131311041 in words is "one hundred thirty-one million, three hundred eleven thousand, forty-one".

Divisors: 1 3 43770347 131311041