131499 has 12 divisors (see below), whose sum is σ = 200200. Its totient is φ = 82944.

The previous prime is 131497. The next prime is 131501. The reversal of 131499 is 994131.

It is an interprime number because it is at equal distance from previous prime (131497) and next prime (131501).

It is not a de Polignac number, because 131499 - 2¹ = 131497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131497) 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 11 ways as a sum of consecutive naturals, for example, 214 + ... + 555.

2¹³¹⁴⁹⁹ is an apocalyptic number.

131499 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

131499 is a deficient number, since it is larger than the sum of its proper divisors (68701).

131499 is a wasteful number, since it uses less digits than its factorization.

131499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 791 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 131499 is about 362.6279084682. The cubic root of 131499 is about 50.8519350238.

It can be divided in two parts, 13149 and 9, that multiplied together give a triangular number (118341 = T₄₈₆).

The spelling of 131499 in words is "one hundred thirty-one thousand, four hundred ninety-nine".