131540331 has 16 divisors (see below), whose sum is σ = 189181440. Its totient is φ = 80818080.

The previous prime is 131540267. The next prime is 131540333. The reversal of 131540331 is 133045131.

It is not a de Polignac number, because 131540331 - 2⁶ = 131540267 is a prime.

It is a super-2 number, since 2×131540331² = 34605717359179122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131540298 and 131540307.

It is not an unprimeable number, because it can be changed into a prime (131540333) 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, 25696 + ... + 30386.

It is an arithmetic number, because the mean of its divisors is an integer number (11823840).

Almost surely, 2^131540331 is an apocalyptic number.

131540331 is a deficient number, since it is larger than the sum of its proper divisors (57641109).

131540331 is a wasteful number, since it uses less digits than its factorization.

131540331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5426.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 131540331 is about 11469.1033215330. The cubic root of 131540331 is about 508.5726216487.

Adding to 131540331 its reverse (133045131), we get a palindrome (264585462).

The spelling of 131540331 in words is "one hundred thirty-one million, five hundred forty thousand, three hundred thirty-one".