131671539 has 48 divisors (see below), whose sum is σ = 210662400. Its totient is φ = 78926400.

The previous prime is 131671537. The next prime is 131671543. The reversal of 131671539 is 935176131.

It is not a de Polignac number, because 131671539 - 2¹ = 131671537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131671537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312549 + ... + 312969.

It is an arithmetic number, because the mean of its divisors is an integer number (4388800).

Almost surely, 2^131671539 is an apocalyptic number.

131671539 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

131671539 is a deficient number, since it is larger than the sum of its proper divisors (78990861).

131671539 is a wasteful number, since it uses less digits than its factorization.

131671539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 533 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 131671539 is about 11474.8219594031. The cubic root of 131671539 is about 508.7416613685.

It can be divided in two parts, 13167 and 1539, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 131671539 in words is "one hundred thirty-one million, six hundred seventy-one thousand, five hundred thirty-nine".