231322022321 has 4 divisors (see below), whose sum is σ = 249116024052. Its totient is φ = 213528020592.

The previous prime is 231322022317. The next prime is 231322022341. The reversal of 231322022321 is 123220223132.

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 59810082721 + 171511939600 = 244561^2 + 414140^2 .

It is a cyclic number.

It is not a de Polignac number, because 231322022321 - 2² = 231322022317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231322022341) 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, 8897000846 + ... + 8897000871.

It is an arithmetic number, because the mean of its divisors is an integer number (62279006013).

Almost surely, 2^231322022321 is an apocalyptic number.

It is an amenable number.

231322022321 is a deficient number, since it is larger than the sum of its proper divisors (17794001731).

231322022321 is a wasteful number, since it uses less digits than its factorization.

231322022321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17794001730.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 231322022321 its reverse (123220223132), we get a palindrome (354542245453).

The spelling of 231322022321 in words is "two hundred thirty-one billion, three hundred twenty-two million, twenty-two thousand, three hundred twenty-one".