231448321 has 8 divisors (see below), whose sum is σ = 255331944. Its totient is φ = 208433280.

The previous prime is 231448309. The next prime is 231448331. The reversal of 231448321 is 123844132.

It can be written as a sum of positive squares in 4 ways, for example, as 408321 + 231040000 = 639^2 + 15200^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 231448321 - 2¹³ = 231440129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231448321.

It is not an unprimeable number, because it can be changed into a prime (231448331) 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, 216586 + ... + 217651.

It is an arithmetic number, because the mean of its divisors is an integer number (31916493).

Almost surely, 2^231448321 is an apocalyptic number.

It is an amenable number.

231448321 is a deficient number, since it is larger than the sum of its proper divisors (23883623).

231448321 is a wasteful number, since it uses less digits than its factorization.

231448321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434291.

The product of its digits is 4608, while the sum is 28.

The square root of 231448321 is about 15213.4256826002. The cubic root of 231448321 is about 613.9759289513.

The spelling of 231448321 in words is "two hundred thirty-one million, four hundred forty-eight thousand, three hundred twenty-one".