131546 has 16 divisors (see below), whose sum is σ = 215784. Its totient is φ = 59904.

The previous prime is 131543. The next prime is 131561. The reversal of 131546 is 645131.

It can be written as a sum of positive squares in 4 ways, for example, as 130321 + 1225 = 361^2 + 35^2 .

It is not an unprimeable number, because it can be changed into a prime (131543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1766 + ... + 1838.

2¹³¹⁵⁴⁶ is an apocalyptic number.

131546 is a deficient number, since it is larger than the sum of its proper divisors (84238).

131546 is a wasteful number, since it uses less digits than its factorization.

131546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145.

The product of its digits is 360, while the sum is 20.

The square root of 131546 is about 362.6927073984. The cubic root of 131546 is about 50.8579927537.

Adding to 131546 its reverse (645131), we get a palindrome (776677).

The spelling of 131546 in words is "one hundred thirty-one thousand, five hundred forty-six".