131166539 has 8 divisors (see below), whose sum is σ = 156422400. Its totient is φ = 107540136.

The previous prime is 131166533. The next prime is 131166547. The reversal of 131166539 is 935661131.

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 131166539 - 2¹² = 131162443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131166499 and 131166508.

It is not an unprimeable number, because it can be changed into a prime (131166533) 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, 407189 + ... + 407510.

It is an arithmetic number, because the mean of its divisors is an integer number (19552800).

Almost surely, 2^131166539 is an apocalyptic number.

131166539 is a deficient number, since it is larger than the sum of its proper divisors (25255861).

131166539 is an equidigital number, since it uses as much as digits as its factorization.

131166539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814729.

The product of its digits is 14580, while the sum is 35.

The square root of 131166539 is about 11452.7961214718. The cubic root of 131166539 is about 508.0904356220.

The spelling of 131166539 in words is "one hundred thirty-one million, one hundred sixty-six thousand, five hundred thirty-nine".