131105709 has 40 divisors (see below), whose sum is σ = 226024128. Its totient is φ = 74183040.

The previous prime is 131105707. The next prime is 131105743. The reversal of 131105709 is 907501131.

It is a happy number.

It is not a de Polignac number, because 131105709 - 2¹ = 131105707 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131105707) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59589 + ... + 61749.

Almost surely, 2^131105709 is an apocalyptic number.

It is an amenable number.

131105709 is a deficient number, since it is larger than the sum of its proper divisors (94918419).

131105709 is a wasteful number, since it uses less digits than its factorization.

131105709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287 (or 2278 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 131105709 is about 11450.1401301469. The cubic root of 131105709 is about 508.0118792043.

The spelling of 131105709 in words is "one hundred thirty-one million, one hundred five thousand, seven hundred nine".