131447109 has 16 divisors (see below), whose sum is σ = 179488512. Its totient is φ = 85529088.

The previous prime is 131447081. The next prime is 131447123. The reversal of 131447109 is 901744131.

It is not a de Polignac number, because 131447109 - 2⁷ = 131446981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131447209) 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, 59977 + ... + 62129.

It is an arithmetic number, because the mean of its divisors is an integer number (11218032).

Almost surely, 2^131447109 is an apocalyptic number.

It is an amenable number.

131447109 is a deficient number, since it is larger than the sum of its proper divisors (48041403).

131447109 is a wasteful number, since it uses less digits than its factorization.

131447109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 131447109 is about 11465.0385520503. The cubic root of 131447109 is about 508.4524522660.

The spelling of 131447109 in words is "one hundred thirty-one million, four hundred forty-seven thousand, one hundred nine".