131986799 has 8 divisors (see below), whose sum is σ = 152967168. Its totient is φ = 111537720.

The previous prime is 131986781. The next prime is 131986817. The reversal of 131986799 is 997689131.

131986799 = 2497² + 2498² + ... + 2517².

It is an interprime number because it is at equal distance from previous prime (131986781) and next prime (131986817).

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

It is a de Polignac number, because none of the positive numbers 2^k-131986799 is a prime.

It is a super-2 number, since 2×131986799² = 34841030220532802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131986799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131986739) 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, 132287 + ... + 133280.

It is an arithmetic number, because the mean of its divisors is an integer number (19120896).

Almost surely, 2^131986799 is an apocalyptic number.

131986799 is a deficient number, since it is larger than the sum of its proper divisors (20980369).

131986799 is an equidigital number, since it uses as much as digits as its factorization.

131986799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265645.

The product of its digits is 734832, while the sum is 53.

The square root of 131986799 is about 11488.5507789277. The cubic root of 131986799 is about 509.1473629698.

The spelling of 131986799 in words is "one hundred thirty-one million, nine hundred eighty-six thousand, seven hundred ninety-nine".