131439727 has 8 divisors (see below), whose sum is σ = 135233280. Its totient is φ = 127674240.

The previous prime is 131439709. The next prime is 131439731. The reversal of 131439727 is 727934131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131439727 - 2¹¹ = 131437679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131439757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2674 + ... + 16432.

It is an arithmetic number, because the mean of its divisors is an integer number (16904160).

Almost surely, 2^131439727 is an apocalyptic number.

131439727 is a deficient number, since it is larger than the sum of its proper divisors (3793553).

131439727 is a wasteful number, since it uses less digits than its factorization.

131439727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14033.

The product of its digits is 31752, while the sum is 37.

The square root of 131439727 is about 11464.7166122848. The cubic root of 131439727 is about 508.4429339477.

It can be divided in two parts, 1314 and 39727, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 131439727 in words is "one hundred thirty-one million, four hundred thirty-nine thousand, seven hundred twenty-seven".