131084109 has 16 divisors (see below), whose sum is σ = 209137600. Its totient is φ = 80666928.

The previous prime is 131084077. The next prime is 131084119. The reversal of 131084109 is 901480131.

It is not a de Polignac number, because 131084109 - 2⁵ = 131084077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131084119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186379 + ... + 187080.

It is an arithmetic number, because the mean of its divisors is an integer number (13071100).

Almost surely, 2^131084109 is an apocalyptic number.

It is an amenable number.

131084109 is a deficient number, since it is larger than the sum of its proper divisors (78053491).

131084109 is a wasteful number, since it uses less digits than its factorization.

131084109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373481 (or 373475 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 131084109 is about 11449.1968713967. The cubic root of 131084109 is about 507.9839789210.

The spelling of 131084109 in words is "one hundred thirty-one million, eighty-four thousand, one hundred nine".