131448021 has 8 divisors (see below), whose sum is σ = 177482880. Its totient is φ = 86522592.

The previous prime is 131448017. The next prime is 131448043. The reversal of 131448021 is 120844131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131448021 - 2² = 131448017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131447982 and 131448000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131448001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277080 + ... + 277553.

It is an arithmetic number, because the mean of its divisors is an integer number (22185360).

Almost surely, 2^131448021 is an apocalyptic number.

It is an amenable number.

131448021 is a deficient number, since it is larger than the sum of its proper divisors (46034859).

131448021 is an equidigital number, since it uses as much as digits as its factorization.

131448021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554715.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 131448021 is about 11465.0783250704. The cubic root of 131448021 is about 508.4536281700.

The spelling of 131448021 in words is "one hundred thirty-one million, four hundred forty-eight thousand, twenty-one".