131828591 has 8 divisors (see below), whose sum is σ = 139762224. Its totient is φ = 123914880.

The previous prime is 131828579. The next prime is 131828603. The reversal of 131828591 is 195828131.

It is an interprime number because it is at equal distance from previous prime (131828579) and next prime (131828603).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131828591 - 2⁶ = 131828527 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 (131828531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9956 + ... + 19046.

It is an arithmetic number, because the mean of its divisors is an integer number (17470278).

Almost surely, 2^131828591 is an apocalyptic number.

131828591 is a deficient number, since it is larger than the sum of its proper divisors (7933633).

131828591 is an equidigital number, since it uses as much as digits as its factorization.

131828591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961.

The product of its digits is 17280, while the sum is 38.

The square root of 131828591 is about 11481.6632505922. The cubic root of 131828591 is about 508.9438492025.

The spelling of 131828591 in words is "one hundred thirty-one million, eight hundred twenty-eight thousand, five hundred ninety-one".