131044541 has 4 divisors (see below), whose sum is σ = 131239932. Its totient is φ = 130849152.

The previous prime is 131044519. The next prime is 131044553. The reversal of 131044541 is 145440131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145440131 = 11681 ⋅12451.

It can be written as a sum of positive squares in 2 ways, for example, as 36060025 + 94984516 = 6005^2 + 9746^2 .

It is a cyclic number.

It is not a de Polignac number, because 131044541 - 2⁶ = 131044477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131044561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96686 + ... + 98031.

It is an arithmetic number, because the mean of its divisors is an integer number (32809983).

Almost surely, 2^131044541 is an apocalyptic number.

It is an amenable number.

131044541 is a deficient number, since it is larger than the sum of its proper divisors (195391).

131044541 is an equidigital number, since it uses as much as digits as its factorization.

131044541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195390.

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

The square root of 131044541 is about 11447.4687595119. The cubic root of 131044541 is about 507.9328617847.

Adding to 131044541 its reverse (145440131), we get a palindrome (276484672).

The spelling of 131044541 in words is "one hundred thirty-one million, forty-four thousand, five hundred forty-one".