131305671 has 32 divisors (see below), whose sum is σ = 235399680. Its totient is φ = 70616448.

The previous prime is 131305631. The next prime is 131305673. The reversal of 131305671 is 176503131.

It is not a de Polignac number, because 131305671 - 2⁶ = 131305607 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 (131305673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17221 + ... + 23646.

It is an arithmetic number, because the mean of its divisors is an integer number (7356240).

Almost surely, 2^131305671 is an apocalyptic number.

131305671 is a deficient number, since it is larger than the sum of its proper divisors (104094009).

131305671 is a wasteful number, since it uses less digits than its factorization.

131305671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40900 (or 40894 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 131305671 is about 11458.8686614343. The cubic root of 131305671 is about 508.2700206973.

The spelling of 131305671 in words is "one hundred thirty-one million, three hundred five thousand, six hundred seventy-one".