131788805 has 16 divisors (see below), whose sum is σ = 159957504. Its totient is φ = 104232000.

The previous prime is 131788771. The next prime is 131788817. The reversal of 131788805 is 508887131.

It is not a de Polignac number, because 131788805 - 2¹⁶ = 131723269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216812 + ... + 217418.

It is an arithmetic number, because the mean of its divisors is an integer number (9997344).

Almost surely, 2^131788805 is an apocalyptic number.

It is an amenable number.

131788805 is a deficient number, since it is larger than the sum of its proper divisors (28168699).

131788805 is a wasteful number, since it uses less digits than its factorization.

131788805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036.

The product of its (nonzero) digits is 53760, while the sum is 41.

The square root of 131788805 is about 11479.9305311487. The cubic root of 131788805 is about 508.8926441308.

The spelling of 131788805 in words is "one hundred thirty-one million, seven hundred eighty-eight thousand, eight hundred five".