131448489 has 4 divisors (see below), whose sum is σ = 175264656. Its totient is φ = 87632324.

The previous prime is 131448481. The next prime is 131448491. The reversal of 131448489 is 984844131.

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 131448489 - 2³ = 131448481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131448489.

It is not an unprimeable number, because it can be changed into a prime (131448481) 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, 21908079 + ... + 21908084.

It is an arithmetic number, because the mean of its divisors is an integer number (43816164).

Almost surely, 2^131448489 is an apocalyptic number.

It is an amenable number.

131448489 is a deficient number, since it is larger than the sum of its proper divisors (43816167).

131448489 is an equidigital number, since it uses as much as digits as its factorization.

131448489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43816166.

The product of its digits is 110592, while the sum is 42.

The square root of 131448489 is about 11465.0987348561. The cubic root of 131448489 is about 508.4542315923.

The spelling of 131448489 in words is "one hundred thirty-one million, four hundred forty-eight thousand, four hundred eighty-nine".