231043321 has 8 divisors (see below), whose sum is σ = 237178880. Its totient is φ = 224988192.

The previous prime is 231043313. The next prime is 231043339. The reversal of 231043321 is 123340132.

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 231043321 - 2³ = 231043313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231043361) 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, 14265 + ... + 25798.

It is an arithmetic number, because the mean of its divisors is an integer number (29647360).

Almost surely, 2^231043321 is an apocalyptic number.

It is an amenable number.

231043321 is a deficient number, since it is larger than the sum of its proper divisors (6135559).

231043321 is an equidigital number, since it uses as much as digits as its factorization.

231043321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40215.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231043321 is about 15200.1092430285. The cubic root of 231043321 is about 613.6175977973.

Adding to 231043321 its reverse (123340132), we get a palindrome (354383453).

The spelling of 231043321 in words is "two hundred thirty-one million, forty-three thousand, three hundred twenty-one".