143448321 has 4 divisors (see below), whose sum is σ = 191264432. Its totient is φ = 95632212.

The previous prime is 143448317. The next prime is 143448323. The reversal of 143448321 is 123844341.

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 not a de Polignac number, because 143448321 - 2² = 143448317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143448323) 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, 23908051 + ... + 23908056.

It is an arithmetic number, because the mean of its divisors is an integer number (47816108).

Almost surely, 2^143448321 is an apocalyptic number.

It is an amenable number.

143448321 is a deficient number, since it is larger than the sum of its proper divisors (47816111).

143448321 is an equidigital number, since it uses as much as digits as its factorization.

143448321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47816110.

The product of its digits is 9216, while the sum is 30.

The square root of 143448321 is about 11976.9913166872. The cubic root of 143448321 is about 523.4780666758.

The spelling of 143448321 in words is "one hundred forty-three million, four hundred forty-eight thousand, three hundred twenty-one".