131388799 has 4 divisors (see below), whose sum is σ = 131422536. Its totient is φ = 131355064.

The previous prime is 131388793. The next prime is 131388827. The reversal of 131388799 is 997883131.

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 131388799 - 2³ = 131388791 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 (131388791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10129 + ... + 19114.

It is an arithmetic number, because the mean of its divisors is an integer number (32855634).

Almost surely, 2^131388799 is an apocalyptic number.

131388799 is a deficient number, since it is larger than the sum of its proper divisors (33737).

131388799 is an equidigital number, since it uses as much as digits as its factorization.

131388799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33736.

The product of its digits is 326592, while the sum is 49.

The square root of 131388799 is about 11462.4953217002. The cubic root of 131388799 is about 508.3772578963.

The spelling of 131388799 in words is "one hundred thirty-one million, three hundred eighty-eight thousand, seven hundred ninety-nine".