131341405 has 16 divisors (see below), whose sum is σ = 179719344. Its totient is φ = 91284480.

The previous prime is 131341391. The next prime is 131341417. The reversal of 131341405 is 504143131.

It can be written as a sum of positive squares in 8 ways, for example, as 13271449 + 118069956 = 3643^2 + 10866^2 .

It is not a de Polignac number, because 131341405 - 2¹¹ = 131339357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58326 + ... + 60535.

It is an arithmetic number, because the mean of its divisors is an integer number (11232459).

Almost surely, 2^131341405 is an apocalyptic number.

It is an amenable number.

131341405 is a deficient number, since it is larger than the sum of its proper divisors (48377939).

131341405 is a wasteful number, since it uses less digits than its factorization.

131341405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118896.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 131341405 is about 11460.4277843368. The cubic root of 131341405 is about 508.3161239956.

Adding to 131341405 its reverse (504143131), we get a palindrome (635484536).

The spelling of 131341405 in words is "one hundred thirty-one million, three hundred forty-one thousand, four hundred five".