131783449 has 16 divisors (see below), whose sum is σ = 163655680. Its totient is φ = 103556880.

The previous prime is 131783423. The next prime is 131783459. The reversal of 131783449 is 944387131.

It is not a de Polignac number, because 131783449 - 2⁵ = 131783417 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (131783419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11859 + ... + 20104.

It is an arithmetic number, because the mean of its divisors is an integer number (10228480).

Almost surely, 2^131783449 is an apocalyptic number.

131783449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

131783449 is a deficient number, since it is larger than the sum of its proper divisors (31872231).

131783449 is a wasteful number, since it uses less digits than its factorization.

131783449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32020.

The product of its digits is 72576, while the sum is 40.

The square root of 131783449 is about 11479.6972521056. The cubic root of 131783449 is about 508.8857501058.

The spelling of 131783449 in words is "one hundred thirty-one million, seven hundred eighty-three thousand, four hundred forty-nine".