131830887 has 4 divisors (see below), whose sum is σ = 175774520. Its totient is φ = 87887256.

The previous prime is 131830861. The next prime is 131830891. The reversal of 131830887 is 788038131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131830887 - 2⁶ = 131830823 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 (131830847) 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 3 ways as a sum of consecutive naturals, for example, 21971812 + ... + 21971817.

It is an arithmetic number, because the mean of its divisors is an integer number (43943630).

Almost surely, 2^131830887 is an apocalyptic number.

131830887 is a deficient number, since it is larger than the sum of its proper divisors (43943633).

131830887 is an equidigital number, since it uses as much as digits as its factorization.

131830887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43943632.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 131830887 is about 11481.7632356707. The cubic root of 131830887 is about 508.9468038683.

The spelling of 131830887 in words is "one hundred thirty-one million, eight hundred thirty thousand, eight hundred eighty-seven".