131540441 has 16 divisors (see below), whose sum is σ = 142430400. Its totient is φ = 121026048.

The previous prime is 131540417. The next prime is 131540449. The reversal of 131540441 is 144045131.

It is a cyclic number.

It is not a de Polignac number, because 131540441 - 2²² = 127346137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131540449) 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 15 ways as a sum of consecutive naturals, for example, 313730 + ... + 314148.

It is an arithmetic number, because the mean of its divisors is an integer number (8901900).

Almost surely, 2^131540441 is an apocalyptic number.

It is an amenable number.

131540441 is a deficient number, since it is larger than the sum of its proper divisors (10889959).

131540441 is a wasteful number, since it uses less digits than its factorization.

131540441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 131540441 is about 11469.1081170246. The cubic root of 131540441 is about 508.5727634125.

Adding to 131540441 its reverse (144045131), we get a palindrome (275585572).

The spelling of 131540441 in words is "one hundred thirty-one million, five hundred forty thousand, four hundred forty-one".