131608 has 8 divisors (see below), whose sum is σ = 246780. Its totient is φ = 65800.

The previous prime is 131591. The next prime is 131611. The reversal of 131608 is 806131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8218 + ... + 8233.

2¹³¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

131608 is a deficient number, since it is larger than the sum of its proper divisors (115172).

131608 is a wasteful number, since it uses less digits than its factorization.

131608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16457 (or 16453 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 131608 is about 362.7781691337. The cubic root of 131608 is about 50.8659815948.

Adding to 131608 its reverse (806131), we get a palindrome (937739).

The spelling of 131608 in words is "one hundred thirty-one thousand, six hundred eight".