131558 has 8 divisors (see below), whose sum is σ = 225552. Its totient is φ = 56376.

The previous prime is 131543. The next prime is 131561. The reversal of 131558 is 855131.

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

It is a congruent number.

It is an unprimeable number.

131558 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4685 + ... + 4712.

It is an arithmetic number, because the mean of its divisors is an integer number (28194).

2¹³¹⁵⁵⁸ is an apocalyptic number.

131558 is a deficient number, since it is larger than the sum of its proper divisors (93994).

131558 is an equidigital number, since it uses as much as digits as its factorization.

131558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9406.

The product of its digits is 600, while the sum is 23.

The square root of 131558 is about 362.7092499510. The cubic root of 131558 is about 50.8595391769.

Adding to 131558 its reverse (855131), we get a palindrome (986689).

The spelling of 131558 in words is "one hundred thirty-one thousand, five hundred fifty-eight".