131445541 has 8 divisors (see below), whose sum is σ = 133998624. Its totient is φ = 128917200.

The previous prime is 131445473. The next prime is 131445563. The reversal of 131445541 is 145544131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131445541 - 2⁹ = 131445029 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 (131445341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4726 + ... + 16888.

It is an arithmetic number, because the mean of its divisors is an integer number (16749828).

Almost surely, 2^131445541 is an apocalyptic number.

It is an amenable number.

131445541 is a deficient number, since it is larger than the sum of its proper divisors (2553083).

131445541 is a wasteful number, since it uses less digits than its factorization.

131445541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12371.

The product of its digits is 4800, while the sum is 28.

The square root of 131445541 is about 11464.9701700441. The cubic root of 131445541 is about 508.4504305235.

Adding to 131445541 its reverse (145544131), we get a palindrome (276989672).

The spelling of 131445541 in words is "one hundred thirty-one million, four hundred forty-five thousand, five hundred forty-one".