131483809 has 4 divisors (see below), whose sum is σ = 134541616. Its totient is φ = 128426004.

The previous prime is 131483771. The next prime is 131483837. The reversal of 131483809 is 908384131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131483809 - 2¹¹ = 131481761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131483879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1528839 + ... + 1528924.

It is an arithmetic number, because the mean of its divisors is an integer number (33635404).

Almost surely, 2^131483809 is an apocalyptic number.

It is an amenable number.

131483809 is a deficient number, since it is larger than the sum of its proper divisors (3057807).

131483809 is an equidigital number, since it uses as much as digits as its factorization.

131483809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057806.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 131483809 is about 11466.6389582999. The cubic root of 131483809 is about 508.4997677953.

The spelling of 131483809 in words is "one hundred thirty-one million, four hundred eighty-three thousand, eight hundred nine".