131341445 has 4 divisors (see below), whose sum is σ = 157609740. Its totient is φ = 105073152.

The previous prime is 131341417. The next prime is 131341447. The reversal of 131341445 is 544143131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17833729 + 113507716 = 4223^2 + 10654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131341445 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131341447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13134140 + ... + 13134149.

It is an arithmetic number, because the mean of its divisors is an integer number (39402435).

Almost surely, 2^131341445 is an apocalyptic number.

It is an amenable number.

131341445 is a deficient number, since it is larger than the sum of its proper divisors (26268295).

131341445 is an equidigital number, since it uses as much as digits as its factorization.

131341445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26268294.

The product of its digits is 2880, while the sum is 26.

The square root of 131341445 is about 11460.4295294723. The cubic root of 131341445 is about 508.3161755981.

Adding to 131341445 its reverse (544143131), we get a palindrome (675484576).

The spelling of 131341445 in words is "one hundred thirty-one million, three hundred forty-one thousand, four hundred forty-five".