131340541 has 4 divisors (see below), whose sum is σ = 131719392. Its totient is φ = 130961692.

The previous prime is 131340529. The next prime is 131340551. The reversal of 131340541 is 145043131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131340541 - 2¹⁹ = 130816253 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 (131340551) 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, 188905 + ... + 189598.

It is an arithmetic number, because the mean of its divisors is an integer number (32929848).

Almost surely, 2^131340541 is an apocalyptic number.

It is an amenable number.

131340541 is a deficient number, since it is larger than the sum of its proper divisors (378851).

131340541 is an equidigital number, since it uses as much as digits as its factorization.

131340541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378850.

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

The square root of 131340541 is about 11460.3900893469. The cubic root of 131340541 is about 508.3150093786.

Adding to 131340541 its reverse (145043131), we get a palindrome (276383672).

The spelling of 131340541 in words is "one hundred thirty-one million, three hundred forty thousand, five hundred forty-one".