231230330321 has 4 divisors (see below), whose sum is σ = 231242603700. Its totient is φ = 231218056944.

The previous prime is 231230330249. The next prime is 231230330369. The reversal of 231230330321 is 123033032132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150823489600 + 80406840721 = 388360^2 + 283561^2 .

It is a cyclic number.

It is not a de Polignac number, because 231230330321 - 2¹⁸ = 231230068177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231230330381) 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, 6108386 + ... + 6146123.

It is an arithmetic number, because the mean of its divisors is an integer number (57810650925).

Almost surely, 2^231230330321 is an apocalyptic number.

It is an amenable number.

231230330321 is a deficient number, since it is larger than the sum of its proper divisors (12273379).

231230330321 is a wasteful number, since it uses less digits than its factorization.

231230330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12273378.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 231230330321 its reverse (123033032132), we get a palindrome (354263362453).

The spelling of 231230330321 in words is "two hundred thirty-one billion, two hundred thirty million, three hundred thirty thousand, three hundred twenty-one".