131439315 has 64 divisors (see below), whose sum is σ = 249984000. Its totient is φ = 58931712.

The previous prime is 131439299. The next prime is 131439353. The reversal of 131439315 is 513934131.

It is not a de Polignac number, because 131439315 - 2⁴ = 131439299 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 303339 + ... + 303771.

It is an arithmetic number, because the mean of its divisors is an integer number (3906000).

Almost surely, 2^131439315 is an apocalyptic number.

131439315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131439315 is a deficient number, since it is larger than the sum of its proper divisors (118544685).

131439315 is an equidigital number, since it uses as much as digits as its factorization.

131439315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 507 counting only the distinct ones).

The product of its digits is 4860, while the sum is 30.

The square root of 131439315 is about 11464.6986440988. The cubic root of 131439315 is about 508.4424027062.

The spelling of 131439315 in words is "one hundred thirty-one million, four hundred thirty-nine thousand, three hundred fifteen".