131299199 has 4 divisors (see below), whose sum is σ = 134847864. Its totient is φ = 127750536.

The previous prime is 131299183. The next prime is 131299243. The reversal of 131299199 is 991992131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131299199 - 2⁴ = 131299183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131299159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1774277 + ... + 1774350.

It is an arithmetic number, because the mean of its divisors is an integer number (33711966).

Almost surely, 2^131299199 is an apocalyptic number.

131299199 is a deficient number, since it is larger than the sum of its proper divisors (3548665).

131299199 is an equidigital number, since it uses as much as digits as its factorization.

131299199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3548664.

The product of its digits is 39366, while the sum is 44.

The square root of 131299199 is about 11458.5862566025. The cubic root of 131299199 is about 508.2616697566.

The spelling of 131299199 in words is "one hundred thirty-one million, two hundred ninety-nine thousand, one hundred ninety-nine".