131699 has 8 divisors (see below), whose sum is σ = 142848. Its totient is φ = 120960.

The previous prime is 131687. The next prime is 131701. The reversal of 131699 is 996131.

131699 = 13² + 14² + ... + 73².

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131699 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 131699.

It is not an unprimeable number, because it can be changed into a prime (131639) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 974 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (17856).

2¹³¹⁶⁹⁹ is an apocalyptic number.

131699 is a deficient number, since it is larger than the sum of its proper divisors (11149).

131699 is a wasteful number, since it uses less digits than its factorization.

131699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205.

The product of its digits is 1458, while the sum is 29.

The square root of 131699 is about 362.9035684586. The cubic root of 131699 is about 50.8777026094.

The spelling of 131699 in words is "one hundred thirty-one thousand, six hundred ninety-nine".