131540315 has 16 divisors (see below), whose sum is σ = 159467616. Its totient is φ = 104160000.

The previous prime is 131540267. The next prime is 131540333. The reversal of 131540315 is 513045131.

It is a de Polignac number, because none of the positive numbers 2^k-131540315 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 352469 + ... + 352841.

It is an arithmetic number, because the mean of its divisors is an integer number (9966726).

Almost surely, 2^131540315 is an apocalyptic number.

131540315 is a deficient number, since it is larger than the sum of its proper divisors (27927301).

131540315 is a wasteful number, since it uses less digits than its factorization.

131540315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 131540315 is about 11469.1026240068. The cubic root of 131540315 is about 508.5726010285.

Adding to 131540315 its reverse (513045131), we get a palindrome (644585446).

The spelling of 131540315 in words is "one hundred thirty-one million, five hundred forty thousand, three hundred fifteen".