131530441 has 4 divisors (see below), whose sum is σ = 150320512. Its totient is φ = 112740372.

The previous prime is 131530439. The next prime is 131530459. The reversal of 131530441 is 144035131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 144035131 = 23 ⋅6262397.

It is a cyclic number.

It is not a de Polignac number, because 131530441 - 2¹ = 131530439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131530481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9395025 + ... + 9395038.

It is an arithmetic number, because the mean of its divisors is an integer number (37580128).

Almost surely, 2^131530441 is an apocalyptic number.

It is an amenable number.

131530441 is a deficient number, since it is larger than the sum of its proper divisors (18790071).

131530441 is an equidigital number, since it uses as much as digits as its factorization.

131530441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18790070.

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

The square root of 131530441 is about 11468.6721550492. The cubic root of 131530441 is about 508.5598754710.

Adding to 131530441 its reverse (144035131), we get a palindrome (275565572).

The spelling of 131530441 in words is "one hundred thirty-one million, five hundred thirty thousand, four hundred forty-one".