231301023221 has 8 divisors (see below), whose sum is σ = 241803734784. Its totient is φ = 220835490480.

The previous prime is 231301023167. The next prime is 231301023229. The reversal of 231301023221 is 122320103132.

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 231301023221 - 2⁶ = 231301023157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231301023193 and 231301023202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231301023229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9281981 + ... + 9306866.

It is an arithmetic number, because the mean of its divisors is an integer number (30225466848).

Almost surely, 2^231301023221 is an apocalyptic number.

It is an amenable number.

231301023221 is a deficient number, since it is larger than the sum of its proper divisors (10502711563).

231301023221 is a wasteful number, since it uses less digits than its factorization.

231301023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18589411.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231301023221 its reverse (122320103132), we get a palindrome (353621126353).

The spelling of 231301023221 in words is "two hundred thirty-one billion, three hundred one million, twenty-three thousand, two hundred twenty-one".