131788645 has 8 divisors (see below), whose sum is σ = 160052256. Its totient is φ = 104160336.

The previous prime is 131788621. The next prime is 131788661. The reversal of 131788645 is 546887131.

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 131788645 - 2²¹ = 129691493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 158367 + ... + 159196.

It is an arithmetic number, because the mean of its divisors is an integer number (20006532).

Almost surely, 2^131788645 is an apocalyptic number.

It is an amenable number.

131788645 is a deficient number, since it is larger than the sum of its proper divisors (28263611).

131788645 is an equidigital number, since it uses as much as digits as its factorization.

131788645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317651.

The product of its digits is 161280, while the sum is 43.

The square root of 131788645 is about 11479.9235624633. The cubic root of 131788645 is about 508.8924381880.

The spelling of 131788645 in words is "one hundred thirty-one million, seven hundred eighty-eight thousand, six hundred forty-five".